Canon EOS 5D Mark III vs Sony SLT A99

Canon EOS 5D Mark III


Sony SLT A99



Reasons to buy the Canon EOS 5D Mark III

Large screen
Screen size
Great viewfinder
In-camera HDR
Combines multiple exposures
Barely any delay taking photos
Shutter lag
120 ms shutter lag

Reasons to buy the Sony SLT A99

Image stabilization
Image stabilization
  1. Sensor shift
Screen flips out
Flip-out screen
Great for movies
Movie continuous focus
Movie continuous focus
Makes it easy to get in-focus movies
Built-in GPS
Great for travel


Explore our gallery of 49 sample photos taken by the Canon EOS 5D Mark III.
Explore our gallery of 50 sample photos taken by the Sony SLT A99.


Canon EOS 5D Mark III Competitors

Canon EOS 6D

Canon EOS 6D


$1,058 - $1,399 body only

$1,799 with 24-105mm lens

Low light performance Lower noise at high ISO
Dynamic range More dynamic range
Screen size Significantly smaller screen
Canon EOS 5D Mark IV

Canon EOS 5D Mark IV


$2,942 - $3,299 body only

$3,499 - $4,199 with 24-105mm lens

Touch screen Has a touch screen
Screen resolution Higher resolution screen
Storage slots Has fewer storage slots
Nikon D750

Nikon D750


$1,399 - $1,797 body only

$1,965 - $2,297 with 24-120mm lens

Low light performance Much lower noise at high ISO
Overall image quality Significantly better image quality
Viewfinder size Slightly smaller viewfinder

Sony SLT A99 Competitors

Sony Alpha a99 II

Sony Alpha a99 II



Focus points Many more focus points
True resolution Much higher true resolution
Interchangeable lenses Built-in lens only
Sony SLT A77 II

Sony SLT A77 II


$1,198 body only

$1,798 with 16-50mm lens

Continuous shooting Shoots significantly faster
Focus points More focus points
Low light performance Much more noise at high ISO
Sony A7

Sony A7

Mirrorless interchangeable-lens

$998 - $2,898 body only

$1,198 with 28-70mm lens

Low light performance Much lower noise at high ISO
Focus points Significantly more focus points
Image stabilization No image stabilization


Canon EOS 5D Mark III

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Sony SLT A99

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Showing 11 comments

Avatar for German Karatayeu German Karatayeu (6:10 AM, January 21, 2017)
not the motor, a partial engine,electrically crossing allthrough circuit from charging unit, onboard they work threesome with electronic shutter, if the charging unit drive dies, shutter curtain atomatically closes until repaired with replacement.
most of mototrs are in dearly costed autofocus lenses.
Avatar for German Karatayeu German Karatayeu (6:02 AM, January 21, 2017)
yeah, and the only thing canons Digic can do is anti alias the noise, the A99II wins them both by being a twice high in low light as it has a back illuminated sensor like in A7RII, which is a rare found actually. the last and least were the Super HAD CCD sensors that had an oppurtunity of this class in matrix
Avatar for Stathis Stathis (4:21 AM, August 23, 2014)
The same wronfg in every test of sony cameras...All the sony cameras have built in focus motor.
Josh (1:26 AM, August 22, 2014)
To me, it comes down to image quality. How the Canon wins is perplexing here. More lenses and a pentaprism are deal breakers? Your comparison criteria is low level and simplistic. Legitimate reviews like the ones done at Dpreview score the A99 84 and Canon 5Dmlll 82. The A99 beats the 5D in every category except "build quality". Image quality, video mode etc. are more important then pentaprism vs. digital. I actually prefer the Sony viewfinder.
Phodeo (2:52 PM, April 25, 2014)
It seems snap sort gives the edge on any camera based on high ISO performance. I'm not sure how else the a99 can have many more advantages, including better image quality and still lose on here.
Ronny... (6:09 PM, January 02, 2014)
I currently hold A77v and A58K cams this r better, cheaper then nikon, canons cams.... and as what i feel A99 is more more better then mark iii... if u r planning to buy high end cam then go for A99... the pic qlty just amazing on this cam then mark iii... enjoy...
Avatar for Ayaz Ayaz (9:31 AM, June 10, 2013)
The best part of SONY ALPHA series has not been mentioned which is fast auto-focus in live view and movie recording...apart from that it also has a unique peaking level option which assists in manual focusing as well. A99 has multi-frame noise reduction which is not available in Mark iii
Avatar for Benjamin Rodriguez Benjamin Rodriguez (5:56 AM, March 11, 2013)
This comparisons are ALL inaccurate and unreliable. Anyone seriously interested should go to a site where humans do the reviews, or for simple specs comparisons, look up the specs themselves.
Avatar for Benjamin Rodriguez Benjamin Rodriguez (5:55 AM, March 11, 2013)
There is none
jorge (0:53 AM, November 29, 2012)
Where the hell is the built in flash on a a99
Avatar for AStarbucks AStarbucks (7:16 AM, November 22, 2012)
Why is it that the world beating 0.05s (or 50ms) shutter lag of the A99 is not listed? That's less than half that of the 5D Mk III and even beats the 1DX (although you can reduce it to 36ms thru its custom functions).

The A99 uses an electronic front curtain to achieve it, similar to the top of the line Canon 1DX.

The even greater irony is that in Snapsort's comparison between the 5D Mk III & the D800 (204 ms), the former was rated as significantly better even though its 120ms!