Отзывы о Фотоаппарат Canon EOS 5D Body
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Canon EOS 5D Body?
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- + У меня было много камер и линз, поэтому мой дальнейший восторг вполне взвешен и конструктивен.
Великолепная (подчёркнуто) цветопередача. Самый лучший цвет из всех фотоаппаратов. которые у меня были. а это и марк 2 и марк 3 и 1дс3. Даже с Кенон 50мм 1.8 фото будут вас радовать, портреты будут живыми, объёмными. будет и воздух и фактура и цвет итд.
Лучшая ФФ камера для новичка, в комплекте с 50мм 1.8, полный кадр это сказка. особенно на этом аппарате. - - Матрица очень чувствительна к любой механической чистке. может облезть просветление. Проверяйте перед покупкой-переводите камеру в режим чистки сенсора из меню и осматривайте матрицу. Особенность именно первого 5д. Поэтому не жалейте и отдавайте в профильный сервис по камерам на очистку сенсора, вот и весь секрет! Если всё же сами рискнёте-только...
Lenses matter with this camera. 50 mpix is unforgiving. The range of lenses I could use so far were the new EOS 16-35mm f/4 IS L, Sigma 50mm F/1.4 ART, EOS 70-200 f/2.8 IS L II and EOS 300mm f/2.8 IS L II. All pictures shown here where taken hand held including the night scenes - so yes you can actually use this camera without a tripod, more about this later.
Handling: Coming from the 5DII/5DIII you will find this camera body very familiar – all the way down to the battery. IT is a big camera even for a DSLR, but not excessive. It is the third generation 5D-series camera based on the 5DII body and accordingly the entire button and screen layout feels very mature and natural. It’s a camera buildt to last many years.
The body is clearly made for still photography. The weight alone makes shooting videos without a tripod a dog because of the combined weight of camera & lens & the fact that the 5DS R can only shoot video using live view. I really miss in-body IS or at least a swivel screen for decent hand held video operation.
The software menu is probably the best Canon has made yet. The layout is an extension of the 5DII/5DIII options, however Canon has added several very useful options such as customizing the auto-rotate focus point individually for vertical and horizontal shooting. Also, the expanded custom settings available for defining your own C1-C3 shooting options are extremely useful. I strongly recommend all users to look into this. I have pre-settings for action, bracketed jpeg shooting and shooting against the sun. Overall, it’s a noticeable step up on the software side.
Battery power is noticeably shorter than for the 5DII/5DIII and most people will probably be well off buying at least one spare. Depending on your shooting habits, you may even want more spares. I could imagine some people going through 3 on an intensive days shooting.
The screen is excellent if not spectacular – and you can easily see if your pictures are sharp. While the screen has some menu options available for how you scroll through your pictures I still find them limited. This is important because @50 mpix you will want to check you results on-screen fairly often to ensure your shots are spot-on.
What irks me a little here is that when Canon decided against a swivel screen they did not at least give the 5DS R a touch screen. Having used one on the 70D I can truly say it’s a blast for changing settings quickly as you can see and change everything at once without fiddling for buttons and sub menus around the camera body.
Exactly when reviewing pictures we confront another of the 5DS R’s shortcomings: it takes time for the pictures to emerge on your screen. For me this is not an issue in spite of all the action shots I take – so it’s not as bad as I see it described sometimes – but scrolling on-screen is not 100% fluid. So if this is key to how you shoot you may want to consider this. At least you can quickly look at your picture at 100% on screen.
Basic Settings & AF: Everything you need and then some. Amongst the essentials the 5DS R has wide auto-bracketing (5 frames) and Canon finally got the implementation of auto-iso right. You can now set the trade-off parameters yourself so you can confidently rely on auto-iso to make your “smart” choices. Finally, as before the "Green" auto-setting also works with RAW files giving extra editing buffer when I hand the camera over to my family members.
AF is one area where the 5DS R is a significant upgrade compared to both the 5DII and 5DIII. Neither of these impressed me much, but the 5DS R is clearly better. It starts with the upgraded AF points and high customizable way you can employ these – like restricting the use to cross-type AF sensors. Combined with its new AF tracking system the 5DS R is especially better than the 5DII/5DIII when shooting moving targets.
The centre AF point is excellent – matching that of the 6D, also in low light. And the 5DS R AF even trumps the 6D centre point by adding a fine centre point option making the 5DS R’s autofocus the best Canon has issued so far.
For video we get face tracking – which works OK. In spite of all its custom glory and improvements Canon’s AF software offerings is still pitiful compared to the completion. Why oh why does Canon not offer a dedicated face and eye AF? This would be even more useful for this camera with its 50 mpix.
Not everything is perfect and some will find the AF points are too narrow in both height and width. I also occasionally feel constrained by the narrow AF span but with 50 mpix going to a longer focus length and cropping afterwards is a real option.
Recording options: 5DS R in fact does have a crop option. Its implementation however makes me wonder how useful it will be for users. When shooting raw the camera doe

Now reason I got 5DSR is simple. I shoot studio, and I need some camera that compliment my Hasselblad and 1DSMKIII I am still using.
Low-Pass Filter Effect Cancellation was welcoming gimmick if it turned out to be practical.
But this camera came with lot of good and bad, and you probably want to think really hard before purchasing it.
What is good:
1. It is 50.6mpix camera, and that is more than some of medium format camera.
2. 61-Point High Density Reticular AF is huge improvement from previous generations of 5 series. You will love better AF performance.
3. Dual slot for CF and SD is what professional photographer has been asking for sometimes.
4. With improved AF and dual slot, it is now lot better position as professional camera though it is not durable as 1D/Ds series
5. Due to form factor, it has advantage in using third party solutions i.e bellows, robotic, panoramic gear and more which 1D/DS series has mixed result.
6. At ISO100-400, and shooting with Studio lighting, image quality is great, and it will make you smile. It is great Studio Camera to shoot well funded assignment.
7. Low-Pass Filter Effect Cancellation while it is not great as advertise, it is still very helpful at Studio Shooting environment or landscape photography.
8. Color artifact issue are limited. If you shoot regularly with foveon or medium format and exercise similar caution on lighting as shooting such camera without low pass filter, there should not be any issue. Have shot tens thousand of images, and have seen no moire so far.
What is not so good
1. It is not too great on high ISO shoot. If you look at competition using Sony sensor, you could see Sony sensor produce better high ISO result.
2. The 5DSR seems to suffer poor result on current version of Lightroom(CC2015), this is probably due to way Adobe has written code, but this create worse result when you are working on ISO800 or higher. Probably want to use DXO or CaptureOne until Adobe address these issue.
3. Still shot ISO only go up to 12800, and not that useful either. For camera that is released in 2015, it is pretty poor. Sony a7R II is going for ISO102400. For video, it is not worth bothering to try shooting in dark.
4. Video is limited to 1080p30, and that is when competition is going for 4k. Only going to be useful on producing some youtube clip that does not require 2k+ or 60p speed. If you are looking for good Video performance, stay with 5DmkIII or going to competitor with better feature.
5. 50.6mpx RAW file data is huge, and it is taxing on your machine. Which mean post processing cost must be put into consideration or use SRAW or MRAW setting on lower budget shoot.
6. Low-Pass Filter Effect Cancellation is not equal to camera or sensor without low pass filter. So, if you are looking for detail or effect present at Foveon or Medium format camera, you will be disappointed.
7. Battery life is limited, so always travel with extra battery and charger.
8. Write Speed is inadequate if you are doing burst shooting. Or even with high pace shooting, you will hit buffer.
9. Even at 50mpix, it still does not beat medium format camera. Let just say my Hasselblad out perform each time on image quality. You can not cheat on physics. It is samething as why Cell phone camera will not truly replace DSLR.
Conclusion
This camera is designed to be a speciality camera. If you shoot in Studio, and could use 50.6mpix sensor. Then by all mean get this camera. Once a while, you need to shoot Video for client, then this camera do just fine in Studio setting. This camera fit just right in with work flow using medium format camera and other professional camera. You will love superb result within Studio Setting.
If you are architecture or landscape photographer, then you will probably love this camera too.
As long as you have good control in lighting at locations or you shoot landscape with plenty of natural light, this camera will work really nicely.
If you take this camera at evening and point to something randomly to take snap shot at dark alley or inside of bar w/o flash. You will be disappointed. With inadequate write speed, I do not think this camera will be useful at sporting events that requires fast burst.
Another thing to be mindful is post production cost with these camera. At 50mpix, from looks of previous shoot I did, single layer photoshop output is at whooping 301.9mb that is before doing any editing. And from what I s


новый 30.4 МП CMOS полнокадровая матрица с двойной пиксель автофокус
и инспектор 4К 30/24П видео с помощью jpeg движения + 4К захват кадра
В 61-точечная система автофокусировки с 41 перекрестного типа датчиками (центральная точка чувствительны к -3 ЭВ) и
двойной пикселей автофокусировки (чувствительны к -4ЕВ) непрерывная следящая АФ в кадры (первые для полнокадровой камеры Canon) и видео
в ИСО 100-32000 (с возможностью расширения до 102400)
в 7 кадров в секунду непрерывной съемки был
двойной пикселей в сыром виде (картинки microadjustment, боке смену, гостинга)
в 150,000 пикселей RGB+ИК-датчик экспозамера и
1.62 M-точка 3.2" полный сенсорный экран
в интернет Wi-Fi ж/ NFC с GPS и с
встроенная лампочка таймер интервал таймера
и улучшена погода-запечатываниепролет>

1) The build and feel is 99% identical to a 5D3, which is fantastic ergonomically, and experienced Canon shooters will feel right at home with this one. It's solid, study. weather sealed, and the mode dial got a nice little upgrade with raised icons and what seems like a bit more solid grip. The new LPE6N battery provides longer life but I'm using my old LPE6 (standard) in it just fine right now. Dual Digic 6 chip do suck up a lot of juice.
2) The lag time between the shutter and the jpg preview popping up on the rear LCD is a little longer than the 5D3, but that's to be expected as we're talking 70MB RAW files here. Yes, 70MB.
3) Speaking of the shutter, the sexiest thing about this camera (besides the red "R") is the new shutter and it's new sound. It's like a sniper rifle with a silencer. It's very stealth and sleek with it's new all motor driven mechanism (as opposed to the old standard motor lift and spring return). By the way, the RGB+IR metering system they brought down from the 1DX for this? Awesome. Love it. I feel like the metering has been more accurate than my 5D3, and I've even used the 1DX many times myself.
4) I've been handheld shooting with a Canon 135 f2 L. First of all, what a lethal combo with this new 5DSR. Wow. Resolution is off the charts good. I found handheld shooting certainly requires a bit more care than the 5D3 to get the most out of the sensor, but we all knew that going in. This is a studio/tripod loving camera. HOWEVER, you can get really good results going about 4-5 times focal length with your shutter speed. (50mm lens x 5 = 1/250th second). Of course, having IS on your lens really helps. By the way, add "Mirror LockUp" to your custom menu (the green tabs). This way you can go in quickly and alter your shutter release lag time if need be, which is precisely why they built the new shutter. That way, you press the button, and the mirror flips up and the camera waits anywhere from 1/8 to 1 second before dropping the curtains on the sensor. You can set it in that range or just turn it off, or engage traditional old manual mirror lock up with the first button press lifting the mirror and the second button press dropping the curtains.
5) I can't get this thing to Moire. I have deliberately shot some really small fabric patterns and weaves, brickwalls, so on and so forth, I can't get it to create the negative artifact. Without the Low Pass Filter effect (this camera has TWO LFPs that cancel each other out to raise sharpness) the propensity for generating Moire and Aliasing goes up.... THAT SAID, at 50MP even the smallest details can get resolved well, so artifacts don't really seem to be a problem so far. Now I know I have some dancers I shoot that wear silky shiny dresses with tight fabric weaves and I suspect I may encounter some color moire there. However... Lightroom's Moire tool does a really good job to easily and quickly remove it if need be.
6) This is NOT NOT NOT a general use, everyday camera. Please get a Canon 5D Mark III (5D3) for that or the amazing 6D for half the price of 5D3. The 5DS and 5DSR really are for professionals who need the ultra high resolving capabilities for a variety of reasons such as Large Print work, studio work, pictures of large groups, architecture and landscapes, and the ability to shoot wide and crop in post without losing details. You don't want to buy this camera to take family pictures. It's overkill and the file sizes, as I mentioned before, are enormous. I own both the 5D3 and 6D. Both are excellent cameras and both are excellent general purpose cameras.
7) Buy Glass. Don't buy this camera expecting the world from even your 24-105 F4 L lens. I have one. Good lens. 5DSR DOES make it look better than on a 5D3... BUT, if you really want to take advantage of what this machine can do, you need to look into some of the upper level L glass like the the new 16-35 f4 L or the 70-200 f2.8 IS II. The 135 f2 L is STILL one of the sharpest lenses ever made and looks gorgeous on this, as do the new Sigma ART lenses. (Everything I just mentioned, I own and have shot on this 5DSR now)
8) ISO performance - Ok it's a studio and landscape camera. It's meant to be shot at or near base ISO, right? (100-800). Well last night I shot a bunch of stuff in my house handheld at 6400 ISO. Lemme tell ya... It looks...really....nice. For all the flak on how much this camera would suck at higher ISOs I think it looks no worse than a 5D3 and maybe even a bit better (again, mostly dependent on your technique.) I would suggest as I always do with higher ISO... ETTR. Expose To The Right. Push your camera exposure compensation UP one stop and pull back highlights in post if need be. I think the 5DSR images at 6400 are really very clean for t

это используется как телескопический и широкоугольный объектив. Что работал большой.<бр /><бр />мой основной целью был ночной съемки специально фотография Млечного Пути и звезд. Результаты были потрясающими.<БР />
я не очень подробно, но я буду обновлять в ближайшее время на этом.

и стоит цена

FYI: If you need Canon service out of warranty. This new 5Dm3 gave contact errors with the 28-300 L lens the 1Ds didn't and noticed the lens mount was damaged but still would fire taking perfect shots. I sent to Canon authorized facility in CA last week for the mount to be replaced and dust removed out of the front elements. They quoted $435 and later changed it to $998(discounted to $804 after complaining) citing a stabilizer major repair plus what I wanted originally. Canon cites a tier structure not visible to the public of billing with no way to order what you want but what they deem needing repair. Your choice is to pay what they want or they will not repair it and send it back. This is America isn't it? (Wish I could do that in my service business, dictate what and how much you will pay or else!). It was not clear what was included with various tiers and not at their service website for disclosure. Canon has great products but their authorized service is appalling to not do what consumers want but what they want to do. I have zero confidence in their repair skills/service if this is how they charge consumers with out disclosure prior to sending gear to them. I found out to late that the Canon original parts cost of a flange and rubber seal, over-nighted would have been under $65. Of course the cleaning of the front elements would have been excluded but the lens would have never left my house. The lens had no other evidence of failure other than contacts not meeting and the damaged flange. Now I will never be sure if the repair was actually needed, damaged in shipment to them or how long the lens will function since it was opened up and "repaired". I lost major ground in Canon authorized services. Be advised, don't freak out when "what ever" fails and start figuring out what you need. Study ALL your options before the "bait and switch" or mystery billing events tags your wallet! There are websites that offer everything you need for your out of warranty gear repair if you or someone is up to it. Some of us have no problems with repairs and given the risk potential of strangers work, shipping and can do just as good. Not everyone has endless funds and this lens was not cheap.
Update Feb 26, 2014: After back and forth with Canon in Irvin, CA and customer relations more "damages" were disclosed that seem to be their justification for the major service criteria. The small surface scratch on the lens barrel from a 1943 bomber ride with my then 85 year old mother at 5000 feet with wind turbulence was the reason for the need to replace the lens barrel. Did not effect functionality and I earned and loved that scratch. It was a paint scratch, not a dent, the camera and lens was never dropped and the zoom action was perfect, just fine. That along with the stabilizer replacement and what I wanted, front elements cleaned and base mount replacement justified the second estimation of the $998. Talking with customer relations dropped the labor cost to parts only charges. The point is I needed the front elements cleaned and the base mount replaced and Canon in Irvin, CA found everything else and refused to do what I wanted/needed due to their high standards of not letting anything out the facility that did not meet their "high" standards of service. All or none! The owner of the property DID NOT have any say in what was going to be performed, zero. With Canon services warranty or out of warranty gear the owner of the property has zero input to what is performed. The web site does not give you a clue to anything you can expect and you will not learn anything until the item is shipped and gone through who knows how many Canon service hands, departments. The risk potential grows exponentially once it leaves your hands no matter what anyone says. Again, before sending to any repair facility, Canon or not, in or out of warranty, be advised that what ever you thought you needed may be of

After being with nikon for 16+ years, I recently threw in the towel. As a wedding shooter, I count on my equipment and need things to work correctly.
I had purchased two nikon d600's 1 year apart and both had the horrible dust/debris issue. After repeat cleanings and 20,000+ shots, both cameras still had the issue. I got tired of wet cleaning the sensors and got tired of nikons poor customer service. Nikon decided that the D600 owners just had to either deal with repeat sensor cleanings or send in the camera to "possibly" have the issue resolved. Nikon had no proven fix besides switching out the shutter and praying that the issue went away. Nikon released the d610 and left the rest of the people hanging.
Leaving nikon was extremely difficult for me because I had a big investment in the bodies, accessories and glass. I made the move at a huge loss but am extremely happy that I did.
The differences:
I purchased both a 6D and the 5D mark III from amazon. The immediate thing that I have noticed is that all my canon glass has been good with focus right out of the box. With almost every nikon lens/camera combo, I had to pull out a focus chart and focus tune software and apply fine tuning. I also noticed that the focus system on my canons do not have the tendency to act up under tungsten lighting like my nikons did. My d600's and d7000 had a tendency to back-focus under heavy tungsten lighting.
The canon DPP software is a pleasure to use. I hated Nikon capture NX2. It was slow and the user interface was horrible. Canon DPP loads quickly and applying batch changes is amazing. I do miss the Nik software selection point feature of CNX2.
The one thing I don't like is the fact that canon makes you purchase your lens hoods separately and at a premium.
I do like the fact that the canon equipment is made in japan and has a quality feel to it compared to cameras like the d600 that are made in Thailand.
The 5D mark iii vs D800:
Prior to leaving nikon, I also spent a week with the nikon D800. I found that the d800 produced a lot of noise in the raw files when pushed to higher iso's. This alone was enough to turn me off. I did test my sample of the d800 for left focus issues. I did not have the left AF issue of older d800's but the camera I got had some focus issues that required fine tuning all my glass to the body. In some cases the fine tune was at +20.
The D800 files did have a lot of detail and dynamic range but the file size was huge. If you shoot a lot of landscape and want lots of dynamic range, the d800 is a good option. But the dynamic range comes at the cost of nikons lack of quality control.
If dynamic range is not your main goal but want a great reliable camera with a killer AF system (better in my testing) and smaller files, the canon 5D mark III is amazing. I suggest not to get caught up in the megapixel game unless you do some very heavy cropping like birds in flight for which the d800 may be a better choice. The 5D mark III files are great and have plenty of latitude for most users.
5D mark III:
Focus:
Focus Focus Focus. The 5D mark III has a killer focus system. The best that I have used. The focus system is lighting fast, accurate and very very customizable. It is a pleasure to be able to customize my focus system like this. I recently shot an event and out of 700+ images, I scrapped maybe 10 shots because of focus. The ones I did delete because of focus was do to me not placing the focus point on the right area of the image.
No back/front focus like my nikons had. No focus shift under tungsten lighting like some nikons.
The hit rate on focus is amazing. You want to know why canon can charge a premium for this camera? Because of its pure amazing focus system! If you absolutely need the best focus system on any camera, this is it.
Customization:
You can assign buttons to do certain functions and to your own shooting style. This is a god send compared to nikons lack of customization.
Body:
The camera is solid with a good feel in the hand. The buttons are easy to operate and cleverly located. Coming from nikon is an adjustment because the camera buttons are in a different layout. It will become easy to use after some time and practice.
I did not like the fact that canon has no built in removable screen protector like the nikon. This is a minor gripe but one that I resolved by buying the vello stick on glass protectors. I know the nikon plastic screen protectors are not fancy but they did a good job of protecting the screen from bumps.
Images:
The 5D makr III images are fantastic. The auto white balance works much better compared to my nikons I had owned. The 5D mark III is not able to pull details from the shadows like the D800 or D6


So, is it better than a Nikon 810?
Yup. It has better resolution, better focusing, and an equally good light metering system.
Which would I rather use?
It depends. If I'm shooting in fairly low light, I prefer the Nikon, or the 5D mk iii. Though, to be fair, the 5Ds r is pretty darn good in low light too.
In the studio?
They are both terrific, but the 5Ds r is superior.
Which is sturdier?
Not sure, but Nikons are traditionally very strong — my 810 survived a fall of about three feet unto asphalt without any harm whatsoever. It was in an old Domke case — my assistant did it. Also, I had my old Nikon D1 out in a very wet snowstorm, and, in spite of an assistant's umbrella, the camera got utterly soaked. Like in a shower for an hour. Dried off, it was perfect. Strong and weatherproof cameras.
Which has better resolution?
Both are really good, but the Canon is better.
Which has better color and dynamic range?
Well, shooting RAW, and converting to 48 bit tiffs, they are both unbelievably good. (Never be shy with the shadows slider — it's your friend.). By the way, tiff file sizes are 300 megs (Canon), and 200 for Nikon. Both are outstanding files that will fill a double spread magazine, or a very large fine art print.
Which is the real photographer's camera?
The Nikon. Okay, so shoot me — I've been using Nikon since 1969 (still have my original Nikon F). Both have incredible features for the serious professional — the Canon has five !!! pages of autofocus adjustments. The Nikon has more buttons, switches and levers, and does have a rear eyepiece shutter (useful on a tripod). The Nikon is a little quicker in startup — maybe enough to capture a decisive moment.
Am I keeping the Canon or the Nikon, and all their lenses?
Both! Hah! I don't mean to be wishy-washy. You can't go wrong with either. I once got rid of most of my Leica, and some of my Hasselblad equipment to take on the original Nikon digital system. When the 5D came out, I ditched my Nikons (and Kodak dslrs) for the Canon system. When the Nikon 810 came out I re-entered the Nikon world, but this time I kept my Canon stuff. One learns by one's errors.
In conclusion:
Both Nikon and Canon make superb cameras and lenses. Both have their strong points, and have their own weaknesses (very few). If you own a lot of Nikon glass, stay aboard, the 810 is great, and who knows when they will have a 64 megapixel camera. ( Not too soon though, I suspect.)
We now live in a golden age of photography. Sure, it's not the same as film and Nikons, Leicas, Rolleis, Hasselblads, Sinars and Deardorfs. That was a classic time, but I think it's better now with these superb new digital systems.

Landscape: Most of the time I used a tripod. Lenses used are 24-70mm f/2.8, 16-35mm f/2.8 and 70-200mm f/2.8 (All Canon brands) I don’t think there is a better camera to beat this resolution-pictures were tach sharp, that said I’m not very happy with it’s dynamic range, but I get around it with bracketed shots and HDR in HDR efex pro. Overall It’s an upgrade for me over 5D Mark iii. I would give 4.7 out of 5.
Outdoor and indoor portraits: All handheld shots. Lenses used are 24-70mm f/2.8, 70-200mm f/2.8 (Canon brands), Sigma brands 35mm art f/1.4 and 85mm f/1.4. Most of these lenses (except 70.200) don’t have IS, I had no problem for getting super sharp images without IS. I’m very pleased with the results. Editing the RAW files were very powerful because of the enormous data stored in RAW files. Colors were excellent, editing was super easy. I love this resolution. It’s huge upgrade for me here over 5D Mark iii, 5 out of 5 without any hesitation.
Wildlife/birds: I used a Gimbal head tripod for most of these shots. Lenses used are Canon 70-200mm f/2.8 (with and without 2x extender), Sigma 150-600mm f/5-6.3. This was a disappointment for me compared 5D mark iii, most of the pictures were softer (when subject moving) than 5Diii. In my opinion this is not the camera for moving subjects, focusing was bit of problem. But I got very good images of animals moving slowly or when not moving. I am not giving a rating for this category because I knew this before I bought the camera.
In general, I love this camera for my uses, which are landscapes, architecture and portraits. I don’t want to rate this low based on my bird photography experience, this camera is not built for that purpose. I’m not going into the details of file sizes and that kind of stuff; you know how these large size files are handled in your computer.

When choosing a camera, you have to consider what you'll be doing with it and if you're going to get into this hobby seriously or just for fun here and there. You also have to consider how much you're willing to spend. The 5D mk III is a great camera, however, it's more towards the professional end and it does weight somewhat a lot if you're traveling and will be walking around all day [you should also consider the other gear you'll be carrying around]. Bottom line is that this camera is great and I have nothing but praises for it. I highly recommend it to anyone that is serious about photography and have the money for it.

I got this camera as a birthday gift this year. It worked great for the first 2 month and I noticed a lot of dust just started sticking to the sensor and isn't falling off. I never had this issue with my Canon EOS 7D which I had for 2 years now. On my Canon EOS 7D, I rarely get dust, and when I do, it usually gets shaken off by the self cleaning unit on the next power cycle. On my Canon EOS 5D Mark III, this never happened. The dust just kept collecting and collecting (the sensor was a dust magnet), so I sensed something was wrong with the self cleaning unit. Not to mention the camera was underexposing 80% of the time. I sent it into the Canon Irvine, CA service center for them to repair it. They adjusted the camera meter. They also adjusted the self cleaning sensor unit (so it was malfunctioning) and did a sensor clean. When I got it back, I noticed they left a bunch of residue and dust on my sensor (more than what I had before). The self sensor cleaning unit did nothing to it. Canon support gave me a shipping label back to get it fixed. So I sent it back in. A week later I got it back, not only was my sensor dirtier (I have test shots), they also left several scratches across the back of my camera and on the side! I contacted Canon support again. They gave me a label to ship it back in to get all the problems fixed. Now they want me to pay almost $280 for replacement parts even though all these issues happened because of the camera malfunction and due to the repair center worker's carelessness! To add insult to injury, I shared this repair story on their Facebook page. Instead of replying me to make things right, they just deleted my post all together. Very scammy company, do not recommend buying their products. I will attempt to work things out with their customer support. Will keep you guys posted. Also Canon, if you are reading this, having to send in my camera in for repair for the same issues (and issues introduced during the repairs) 3 times is very unacceptable.
To people who says the reviews are about the products and not the repair centers. It is about the product. Not only is my camera screwed up on the basic functions of a digital camera, don't count on Canon to honor their in-warranty repairs (which is part of the product you buy). If you get a defective Canon EOS 5D Mark III, guess what? You are out $3500+tax!
Update 7-11-2013:
After 3 trips to Canon's repair center (still pretty ridiculous how they didn't get it right the first time), they have adequately fixed my camera. While there are still a few dust spots on the sensor, they are barely noticeable, so they did clean my camera to an acceptable level. It seems CPS handled my repair this time as my camera came back in a CPS bag. Also they have decided to replace the scratched up parts (caused by the repair center) for free after I complained to their Facebook page. Since my camera is usable now, I will need to take this camera and shoot before I can give a full review on the product. Right now I have upped my review to 3 stars and I doubt I will ever give it a 5 star rating due to the fact that the I had to send the camera in 3 times to get an in-warranty repair correct. If the warranty is part of the product you buy, Canon needs to be able to honor that warranty before the customer needs to make complaints online.
MAIN REVIEW HERE (10-15-2013):
I will not raise my star rating from 3/5 on this camera due to the problems I am about to describe in this review and the horrible warranty service I received. This is an okay camera, and can work very fast in continuous shutter mode. The focus tracking is very fast and I have used it on quick moving subjects and it hits the mark 95% of the time. Also, I can use this camera up to ISO 6400 with no issue in low light. While a bit grainy, there is barely any image noise even at ISO 6400. There is also no noise even during long exposures. I only spotted around 5 tiny "hot pixels" after a 4 minute long exposure. The camera has a built in "quiet mode" which kind of works. It suppresses the mirror slap noise, and I have used a few times outside around wildlife. While it does make a sound, ambient noise is enough to cover over it! Sometimes, I accidentally fire off 2 shots in this mode because I didn't hear the mirror. Also, this camera is incredibly rugged, and I have shot with it in rain and under waterfalls. No water got in and it performs very well (just make sure you have a weatherproofed lens too!). The only few issues that still persists in this camera is underexposure and white balance. My camera still constantly underexposes 2/3 to 1 stop around 75% of the time even though the light meter has already been checked and adjusted several times at the repair center during that self sensor cleaning problem. Also, I have noticed that the auto white balance i

I own a Canon camera with an APS-C, two film slr cameras (Pentax), and now the 5d Mark III.
I love this camera. I admit to having a bit of techno-lust, but this camera has was worth every single penny to me, because I love the images I've been able to produce with it.
The larger sensor size on the Mark III makes it roughly equivalent to 35mm film. The ISO range is large (50 to 102,800), and low-light performance is solid. Images still have very high detail at 1600, and the camera produces very acceptable images at 6400 ISO. Images produces at 12,800 are still solid, as there is still a lot of detail though noise does enter the picture.
The auto-focus system is tremendous. Having gone from 7 auto focus points on my previous model to a fast and response 61 point system has helped nail focus in dark environments. It is fast and very responsive, and the ability to switch to a precise auto-focus point with one touch is a real boon. Customizable menus and the ability to change functions from factory default to specialized functions has really made this camera a joy to use. With my old camera, I sometimes felt limited or frustrated in what could be accomplished; with the Mark III I often find myself saying, "it can do that, too? Oh man... how cool is that?"
I travel frequently (and often in harsh environments), so the weather sealing and rugged body is a real plus for me. My old camera looks like it's been fed to the dogs but it still keeps going, the Mark III feels like it is built like a tank in comparison, so I have fewer qualms about taking it out into rougher weather or dirty environments. I prefer landscapes and street photography, so the wider sensor suits my style. The ergonomics are preferable (for me, at least) to the smaller APS-C styled bodies, but the rugged build does come at a significant weight disadvantage, as this weighs roughly 50% more than my other body. When coupled with a heavy lens, it can be a burden to drag around on a long day.
Even still, it is a joy. The silent shutter mode is a HUGE advance, as it makes street photography much more practical. You can snap a pic and be on your way before your subject even registers the camera.
EDIT:
I've had this now for over a year, and I've just fallen completely in love with its capabilities. It's making me a more adventurous photographer as it is making me push the boundries of my photography as it presents options that I didn't even know where there. In camera HDR is a gimmick but produces useful images. Multiple exposures are fun, and a nice feature. But what really has blown me away with this is the level of control I have over my images. I find more and more that I am able to dial in settings on the fly to get the image "right" in the camera, reducing post processing time.
Since you can write RAW and JPEG, you've got files ready for transfer and the originals for playing with.
This camera will age gracefully. It has withstood lots of abuse already and still looks great. The weather sealing has been a boon. Even though I am careful with my gear, there's a certain amount of damage that will happen if you're in tough environments.
A tremendous effort by Canon.

This camera is substantially improved in the autofocus system of the 5D II! But lesser so relative to the 7D. The 7D is likely good enough to not require an upgrade to this camera for this feature, but this is a revolutionary upgrade over the 5D II. Having all the points is so convenient, and almost all of them are as accurate as the center point of the 5D II. One advantage over the 7D autofocus system is the level of customization possible with shutter priority and servo methods.
The ISO range and noise performance at high ISO is much better than both the 7D and 5D II. This is a feature that I would recommend upgrading for. Images are usable for publication at 12800 after noise reduction and sharpening for small enlargements. 25600 ISO on the 5D III is pushing it, but for 8 X 10 prints, the quality is good enough to make sellable prints.
Weather sealing is better than both the 7D and the 5D II. The battery grip is more stable and integrated with the 5D III than either of the other camera bodies I have used. Canon did a great job with making the battery grip feel VERY solid on the 5D III. This was actually one point that not many people comment on but I really appreciated. It almost feels as uniform as the vertical grip on the 1D X - yes, it's that firm with the body. I really liked that.
The shutter speed is 2 frames faster than the 5D II and 2 frames slower than the 7D. It's right in the middle between the two.
A smaller difference that isn't usually mentioned is how much better the depth of the hand grip is. The camera handle actually comes out a little further, which means my fingers wrap around the handle much better. I really like that because I feel like I have a more solid hold on the body with heavy lenses than I did with either the 7D or the 5D II.
There is the addition of a multi-function button next to the shutter, and the 5D III is more customizable in general than either the 7D or the 5D III. The customization ability is probably the least spoken about benefit of upgrading to the 5D III from the 7D and 5D II.
Is the 5D III worth the upgrade for the price? I think it depends on what you are going to use it for. The 7D was always best considered the enthusiast action camera and the 5D II was always considered the enthusiast studio camera. I think the 5D III could replace both of these as a combined enthusiast action and studio camera. I have to be careful about saying that however - the 5D III is really a professional tool, not an enthusiast camera. I think the 5D III performs best as a studio camera, but it can do well as an action camera. The level of performance is in some ways on par with the 1D series, but missing some of the advanced technology in the 1D X like the improved metering system and the metering-autofocus integration. Upgrading from a 7D for action photography? I would upgrade to the 1D X instead of the 5D III, unless you want to do more studio work than action photography. Upgrading from the 5D II is an easy recommendation to spend the money and upgrade. The low noise performance, improved dynamic range, added versatility, and customizable options make the 5D III an easy upgrade from the 5D II and worth the price.

I have been a Canon shooter for a while and I am stepping up from a Canon 7D. The 5D is a little bit bigger than the 7D but both have similar build qualities. Some of the things that have changed from the 7D to the 5Dmkiii is the shooting function button, to change from Manual to Shutter Priority there is now a button on top that stops you from accidentally changing modes. Other than that, the ergonomics are pretty much the same (outside of the AF System).
I had been shooting with the 7D for some time and I was really on the fence about making the move because I swear (and still do given I own both cameras) that there is not a significant difference between the images of the cameras when shooting at lower ISO's. When looking at both images side by side colors are slightly better, it seems like tonal gradients looked a little better but it was not huge. The problem I had with the 7D is that at ISO 3200 the images were so noisy they were about unusable, even with some cleanup things were pretty rough. I have shot many images with the 5D3 and I get great looking shots at ISO3200.
The other huge difference is the AF System on the 5D3, head and shoulders better than anything I had ever used. The 7D was good and worked well and I had an old 1DMkii that had 45AF Points and was blazing fast but the new 5D was amazing and how many different configurations of the AF system you could set took me months to get used to but I love it. Sure the Nikon D800 has 36megapixels but I have always said, I will take a lower resolution shot that is spot on and crisp over a high resolution image that is blurry.
Both in studio and out in nature this camera performs well and is very refined. I have shot with the Canon 7D, Sony NEX 5, NEX 3 and the new Fuji X-E2 and will take this camera every time. It has an AF System I can count on to be spot on every time, the ergonomics of it allow me to pull the camera out of my bag and change shutter, aperture and ISO without ever moving my eye out of the viewfinder and the LCD screen looks great in back.
If I were going to knock anything it might be the slower burst mode but that would be about it. I don't shoot enough video with it to really talk about it's performance but I know a lot of people love it for that.
************UPDATE****************** 04-09-2014
After my last studio shoot I decided to send my camera into canon for cleaning (I normally have my camera sent out in January when I am shooting less to make sure everything is working right) and I get the estimate back that the there is dust between the low pass filter and the sensor and because of that the sensor needs to be replaced. Keep in mind at this point the camera had been used mainly in studio and never seen a drop of rain and is never kept without a lens or body cap on the camera AND the camera is only 15 months old. Given the light use and delicate care I take with my equipment and that I had a 7D for over two years working in the exact same environments with no problems, I feel this is 100% a manufacturers defect. After writing Canon several times they refused to address the problem and I was stuck with a 940 dollar bill.
After the new sensor had been placed in the camera everything works good.
To me it is crazy to think that needing to replace the sensor every year is a normal thing and considering Canon refuses to answer my questions regarding this repair I am to assume this is somewhat common.
At this point I am never buying another Canon product ever again. There are too many great camera manufacturers out there to hold allegiance to a company that does not value me as a customer. I have owned the 20D, 7D and 5Dmkii. I own the 16-35 L, 24-70L, 35mm L, 50mm macro, 85 1.8, 100mm Macro L, 135 L and 70-200 L. Goodbye Canon.

For the last three years I have shot with either a Rebel or the 7D, and my biggest complaint has been the noise that is present in low light photos. With the 5D Mark III, this is no longer an issue. The best part of the camera is that it can adapt to most lighting conditions, with the right user input and management of camera settings. I prefer the natural look of photos without a flash, and it seems that in most cases the lighting conditions you shoot in are sub optimal.
Color of photos it produces looks very pleasing and natural. Though there may be some advantages to shooting RAW, my preference is JPEG for simple photo sharing and editing, and JPEG photos work great.
Love the sound of the shutter, and love the fact that you can easily switch it to silent mode shooting. It's impressively quiet.
The two compromises I felt I had to make when getting this camera were (1) lack of a flip out screen and (2) lack of autofocus video. Perhaps in future versions Canon will consider a pull out screen, and hopefully improve the focus accuracy and speed when shooting in Live View mode. Still a big sluggish on this model. As far as the video autofocus capability goes, it seems like it needs refining and fine tuning. I believe some Nikon DSLR cameras have this, but I'm not sure how well it really works. Overall I've been quite satisfied with the 5D Mark III and have not dwelled much on what I considered to be "compromises" (or missing features), but rather have enjoyed shooting.
Most of my photography is for my children, and this is where the autofocus and low light capabilities really shine. Other things I shoot include flowers and landscapes.
The 6D may be a good alternative for some who are looking for the best budget full frame option. Though I considered it, my concern was that the autofocus capability and limited view finder coverage of the 6D would be limiting. It would be nice to have the 5D Mark III be a little bit smaller, though.
The build is excellent. Feels much like the 7D, but more refined. My hands are big, so it fits me well.
Lenses I use in with the camera include
Canon 24-70 L - extremely useful. I find the wide angle quite nice. The 24-70 on the 7D (cropped sensor) just didn't go wide enough.
Canon 50 1.4 - nice and lightweight, and great when stopped down to F2 or beyond. Has great background blur. I also have the 40mm lens but find the 50mm more useful viewing angle. Quite tricky to shoot at F1.4 or F1.8 - most everything is out of focus. But a fun lens. Wish it focused better in dim lighting - seems to struggle.
Canon 28-135 IS - handy walk around lens. Use it for vacations mostly. F5.6 on the telephoto side is a bit slow for me. Quality of photos is good, but not really comparable to the L lenses. Don't use this lens that much.
Canon 100 IS L Macro - the viewing angle seems just right for portraiture. Also use it for macro, of course. Exceptional bokeh and photo quality. Fairly lightweight.
Canon 70-200 IS L II - my favorite lens by far. Most pleasing results, and fast on focus and on performance. Most often shoot at F 2.8 or F 3.5. Would probably use this lens much more if it were smaller / more lightweight. But then it probably wouldn't be F 2.8. My wife and I call this the "King Lens," and it's well deserving of that title. Phenomenal build quality and very fast lens.
I like Ken Rockwell's review of the 5D Mark III. Read it several times before getting the camera, and I think it's a great source of information to consider if you're looking at the camera.
Costs a lot. Ouch! I've actually been somewhat careful about where I take it, which wasn't even a thought with the 7D or the Rebel T1i. Sometimes I wish I had a little Rebel for smaller size and portability and less liability (i.e. concern it will get lost or be stolen), but then I remind myself that I wouldn't be satisfied with the performance and photos, particularly the low light capabilities.
I hope to get many years of functional and successful use with the 5D. I considered the Mark II version, but wanted easier video controls and updated auto focus. Glad I went with the Mark III. I'm using the video more often than I thought, though the manual focus does take some getting used to. And lots of practice and patience. But when done right, it's very rewarding.
By the count and quality of lenses I have, and given the 5D Mark III is pretty much a professional camera, I probably ought to be making some kind of business or money on it. But I just use it for family photogr

When the MkIII first was announced, it was about $500 more than it is now. And on paper, I decided that for the quality differences in my actual images, it would not be worth the upgrade. I felt content in my analysis and went on happily using my MkII for several more months in which I logged thousands of frames and make several new additions to my portfolio, which you can see at LensTraveler18 and at this moment all images in the last 3 years are from the MkII. This winter, I traveled to Jordan with a group of photographers and met a guy who went through the same thought process I did. He gave me a complete tour of the new features and I was blown away with the improvements made by Canon.
After the recent price drop, which brought the MkIII within about $500 more than what I paid for the MkII, I decided to make the purchase. I am thrilled that I did.
I just returned from Iceland and used both cameras and started to notice differences that make my experience more enjoyable and my images "better" from my perspective. I will try and explain what I found and why those changes were important to me.
This is a complete overhaul, upgrade and enhancement of the MkII.
There are no similarities except the size of the sensor physically and the number of megapixels which is roughly the same as the MkII. So to consider this an upgrade is misleading.
The body is shaped differently yet almost completely familiar to the MkII user, and the menu structure is an enhanced version of the MkII. It's VERY enhanced.
The Canon "Experience:"
If I were to summarize what I realized and what's been said over and over here in the forums is that Canon actually listened to users carefully and implemented nearly every suggestion for improvement, and there are many. I cannot say enough about Canon and Canon Professional Services (CPS,) who are the repair and service arm of Canon. Nikon readers should tune out here, I suspect you will be disappointed. Before I left for Iceland, I had my 5dMkII cleaned and adjusted by CPS, it took 3 days, the camera came back better than it was before and I had a long conversation with the service rep who explained what was found and what was done to my camera. Side note: I slipped and smashed a 17-40L zoom to smithereens. I spent 5 minutes picking up the pieces so I wouldn't litter. I put all the pieces into a box and shipped it to Canon. They charged me under two hundred and returned a perfect, tested lens. That's what you get with Canon.
Features:
With the MkIII, autofocus has been enhanced so much that it's practically telepathic. The problem is that so much new functionality is built in, the learning curve on the autofocus system itself is substantial. You can just use it like you did on the MkII and it's 1000% better but there's so much it can do. I cared about that, I was thrilled to see how heavily it was enhanced.
The AEB (autoexposure bracketing) system now matches Nikon in allowing for 3, 5 and 7 frames, with 1/3 to 2 stops between each frame and with full offset. For HDR types, this is a huge improvement and very welcome. The memory card management system now accepts two cards, one SD and on CF, and you can separate which image types goes to which card or use them as backup. I realize Nikon's high end cameras had this before so it's catchup here too. But very welcome.
There are two new "functions" which are useful and one of them is AWESOME. The camera can now shoot HDR and process 3 frames into a single Jpg image. I have no use for this since I do everything in software but many people will really enhance their results with this new feature. The other new function is "multiple exposure" shooting which I haven't had since my film days. Yes, I am that old. I had some fun with it this past weekend and I am thrilled it's there.
Virtually ALL buttons are definable and a new "Q" button has been added. I think it was on other Canon models but not on the MkII. I have already become so used to it, I almost can't imagine working without it.
The processor upgrade shows up as faster processing time for noise reduction, higher frame rates and generally snappier performance. Since I spend time out in the dark, I was concerned with low light performance. This gets into a discussion of how the new sensor performs. The new sensor has about double the dynamic range as the MkII. At night, I expose at ISO100 for 10 minutes typically and sharpness was always excellent on the MkII, I never complained. Yet the MkIII is better in several ways; the pixels are "sharper" the fringing/noise is far lower and the color appears more accurate. There are also non-specific diff

Like most Nikon photographers, I was extremely excited about the Nikon D800 when it was announced, but paused as it became clear that there were some manufacturing problems that were being sorted out. I waited a year and recently purchased a D800 body with serial 305xxx from Amazon, thinking that surely the left-focus issue was behind us. I was incorrect. After two bodies exhibiting the same unacceptable left-sensor-focus problem, and despite witnessing the most amazing dynamic range I've ever seen from a DSLR sensor, I decided to take a deep breath and switch to Canon.
However, my switch from Nikon was not without its challenges--mostly due to apparent manufacturing tolerance issues between the 5D Mark III body and several L lenses that I ordered. The first 24-70mm f/2.8L II, 70-200mm f/2.8L IS, 50mm f/1.2L did not focus properly. For all three of these lenses, micro-adjustments were not adequate to fix the problems. However, the second copies of two out of three of these lenses were fantastic (I gave up finding a 50mm f/1.2 that could focus). The 24-70mm f/2.8L II in particular is the sharpest lens I've ever used on any camera at f/2.8.
Now that the lens problem is sorted out, I offer the following review:
Image quality: Subject detail for a 22MP sensor is astounding (especially with the 24-70mm f/2.8 II) and the color rendition is wonderful--much better auto white balance than the D800. Dynamic range is only acceptable; I occasionally see shadow noise and banding with dark, colorful subjects at ISO 100 when I push the images slightly in post (but oddly, not at higher ISOs). Likewise, highlights can't be recovered as reliably as I would expect. Canon has some room for improvement here (this is a real Nikon strength), and for this alone I deduct 1 star. The high ISO noise performance is about as good as the D800--really excellent! If you are careful with exposure (which oddly I have to bias +2/3 or the images are too dark), you can achieve extraordinary results.
Autofocus: Quite good overall--fast and accurate. It is similar to the D800 but without face detection through the viewfinder. It is unfortunate that face detection through the viewfinder is missing; the feature appears in the Canon 1D X, actually works and seems to aid not only candid photography, but also sports/action where faces can be detected. The detail focus on the 5D Mark III is really great, but the subject tracking is remarkably poor, bordering on unusable in my opinion. My Nikon D300 from 5 years ago can track subjects much more reliably.
Ergonomics: The camera is big, but the ergonomics are fantastic--far superior to the Nikon D300 and the D800. Unlike the D800 that feels a bit like holding a 2x4, the 5D Mark III has a wonderful grip and thumb groove that inspires confidence. The control layout is different than Nikon but not terribly so, and after a brief period every bit as easy to use. The C1, C2, C3 custom modes are wonderful. I purchased the battery grip extender and love the improved ergonomics. I don't quite understand why the grip extender control positions don't better match the positions on the camera body, although this doesn't seem to matter much in practice.
Video quality: I was prepared for good-but-mushy, alias-and-moire-free video. What I am seeing is wonderful, bokeh-filled, full-frame goodness. The resolution looks great to me, and while there are 3rd party firmware upgrades available (from Magic Lantern) that bring high-dynamic-range RAW video with remarkable quality, I don't think I need this; I love the look of the stock 5D Mark III video. As a point of reference, the Nikon D800 exhibited some moire the first time I tested the video feature.
Overall: Except for the rough landing with Canon lenses (all sorted thanks to Amazon), I haven't had this much fun with photography in a very long time.

PROS:
50 MP Resolution
Enhanced image sharpness
Better definition of fine details (was not really expecting this, but am pleasantly surprised)
Ability to crop 90% of the photo away, and still have a decent size image.
Ability to print large prints.
CONS (includes a few that annoyed me with the 5D III):
Overpriced, a little.
Slower than the 5D III, even with a faster 160 MB/s card.
Flash is still synced at 1/200th second. Really!
No built-in GPS. Really!
ISO capped at 6400. REALLY?
For moving (fish) subjects, I can no longer shoot at 1/100 to 1/160th...motion blur impedes sharpness. So, I'm stuck with 1/200th, and darker background blues than I prefer.
Sensor noise and low light performance is not improved.
Would I recommend this camera? For a specialized few, yes! If you need to print billboards, need the highest possible resolution for tiny details, and want the finest image quality possible without a Gigapan head or a medium-format, then this might be for you. Forget it for sports or fast action photography. Great landscape and portrait camera. Giant image quality leap forward, but the hardware and software didn't keep up.
We'll see what the 5D IV has to offer...

I had high hopes for this camera. The II which came out in '08 was already an exceptional camera and people were comparing it to RED, so naturally I thought the III would be all that better. Canon did fix what the II had deficiencies on, but it didn't really take any great leaps to continue with furthering its strong suites, which I think holds it back in some categories that Nikon now surpasses in.
Here are a few things that Nikon D800 does well better than 5dIII
Better latitude/dynamic range (especially in photos) You can actually pull out detail, color information and gamma in shadows taken in RAW that you can't do with the 5dIII. In fact, if you try to do so with the 5dIII, you get heavy noise and artifacts.
It is sharper in terms of video (out of camera). The out of camera video remains much sharper and has greater detail than the 5dIII. When I shot with the 5dIII it looks very fuzzy and very soft. But I do think this is in direct correlation to why the 5d has better moire and anti-aliasing than the d800. This becomes apparent when I sharpened the image in post and the detail and sharpness came back but I got more aliasing and moire . So I think Canon did this in mind that this was the trade off for the low moire and aliasing.
I think the D800 just takes better overall photos in general.
Here is a few things that the 5d III does better than Nikon D800
First off, I explained that there was an issue with the softness of the video. Well all this can be corrected if you just run it through some software and sharpen the video. It looks more comparable to the D800.
The 5d is faster than the D800 in terms of FPS and how fast and accurately it focuses in on the subject.
It is all around better in low light, better ISO performance and doesn't go to the extremes that D800 goes through by making the ISO steps less dramatic.
Better ergonomics. Feels like you're gripping a military weapon that was designed in mind that someone would need to express a comfortable feel when shooting.
Allows for editing and post work in Video shot. The d800 doesn't fair well when you try to sharpen it and the 5d performs better in post for video. The opposite is true for photo though.
And here are a few of the intangible observations that I came up with. The 5d III has excellent battery life and far surpasses the D800 in battery longevity. The battery lasted for maybe 3-4 hours of shooting video and idling when I did my shoot. When I used an older Canon 60d, the battery life was about just an 1 hour of the same activity I was putting it through. The D800 is about just an hour of battery time for the same out of work. The second one that nobody mentions is the codec. The 5d III uses a very advanced codec that compresses the files so they take up almost nearly no space on your flash drives. I shot with the 60d last year and it was gobbling up maybe 32 gigs per 45-50 mins. Whereas the 5d III uses about 3 hours maybe a bit more on the same amount of storage. I was completely surprised and I bought way more SD drives than I needed because I just remembered how fast they were running out in the last shoot. You can choose from two. They are all-i and the IPB. One is used primarily for editing while it uses more storage space, but the other uses less storage but is less indusive to editing (as Canon lists). But from my own experience, I thought the IPB performed very well in my editing suite. The D800 eats through storage space very recklessly and doesn't use a very efficient codec system.
Here is the final breakdown that I would recommend.
Go for D800
If you need a Video camera to shoot studio shots in a controlled environment where lighting isn't an issue.
Go for D700
If you don't care at all about Video and all you care about is photos. Seriously the D700 is the best thing out right now and it just got a lot cheaper. If I wasn't a video professional, the D700 would be my pick if video wasn't my concern.
Go for 5dIII
If you shoot video in outdoors settings or indoors with bad lighting and you have no control of the environment. This is especially great for a rogue documentary filmmaker.
This is just a short brief detail of what I think of these cameras. I don't hate or like Nikon or Canon. I am partisan to both and only care about performance. So with that being said, you should buy the camera that suites the type of shooting you need.
What really won me over was the battery life and how i never have to worry about running out

Simply put the Nikon D810 is a better camera body than the Canon 5d MK3 in every way. In the end the reason I purchased the 5d mk3 over the Nikon D810 has nothing to do with the camera body, instead it had to do with the glass. The Canon L lenses are superior to any other brand right now. Just take a look at the stunning 70-200mm mk2 f.2.8 or the lense which is considered to be the best for portraits the Canon 85mm f1.2. Then add to that the Canon 24-70mm mk2 and you see what I mean. But that was not all. I also had to consider what my next camera body upgrade would be and how that would effect my decision. The Canon 5d mk4 is due out in the near future and having all Canon lenses this would be a simple upgrade on body only. Meaning that I would not have to purchase more glass for two camera bodies such as the 5dmk4 and the Nikon D810. Having owned my 5d mk3 for three months now I can truly say it is stunning. The pictures are awesome and the low light performance is better than my Canon 7D. I have not regretted the decision to purchase the Canon over the Nikon at all. I would also advise you to purchase the single or dual spider holster. I own the dual spider holster as I have two camera's and it is the best system out there. I am not a professional yet but will be starting up my business soon. As mentioned Nikon D810 is better but the 5dmk3 plus glass is slightly superior in my opinion.
