• 35mm 864.0mm2
  • 22.3 megapixels
  • ISO 100 - 25,600
  • APS-C 366.6mm2
  • 24.3 megapixels
  • ISO 100 - 25,600

Buy From

Differences

Canon 5D Mark III advantages over Sony A77 II

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 6.25 vs 3.92 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.50 vs 0.8 sec
    Faster startup lets you catch the moment
  • Longer stills battery life
    More info 950 vs 480 shots
    Capture more photos
  • More cross-type AF points
    41 vs 15
    Cross-type AF points improve autofocus performance
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Bigger JPEG buffer
    63 vs 26 shots
    Take more JPEG shots before waiting (burst mode)
  • Higher extended ISO
    102400 vs 51200 ISO
    Higher extended ISO can give more low-light flexibility

Sony A77 II advantages over Canon 5D Mark III

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Less expensive
    $1798 vs $2699
    Save money for lenses or accessories
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Newer
    4 years vs 6 years old
    Newer cameras often support more advanced features
  • Faster JPEG shooting
    11.5 fps vs 6.0 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    12.0 fps vs 6.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    28 vs 18 shots
    Larger buffer for RAW shots (burst mode)

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Top deck display
    Both provide
    Check settings with a screen on top of the camera
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use an external screen to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Your purchases support this site

Buy the Canon 5D Mark III

Your purchases support this site

Buy the Sony A77 II

Review Excerpt

  • Superb still and video image quality; Powerful, fast, and accurate AF system with loads of cross-type points, loads of configurability and great frame coverage; Rugged, weather-sealed body with great control layout and user-interface configurability.

  • Dynamic range is limited by noise in deep shadows; Somewhat heavy-handed noise suppression and sharpening at default settings. (Shooting RAW avoids both.); No AF illuminator.

  • Excellent image quality, especially lower ISOs; Improved high ISO performance when using RAW; Very good dynamic range; High-resolution images; Very fast single-shot autofocus; 12fps burst mode with C-AF; Good value for its class.

  • Lackluster continuous AF performance; Strong NR processing in high ISO JPEGs; Sluggish buffer clearing; Short battery life compared to most DSLRs; Joystick control easy to press accidentally.

The Competition

Compared to Canon 6D

Canon 5D Mark III
Canon 6D
  • $2699
  • 35mm
  • More cross-type AF points
  • Less shutter lag
  • $1222
  • 35mm
  • Less expensive
  • Built-in Wi-Fi
Sony A77 II
Canon 6D
  • $1198
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
  • $1222
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Canon 5D Mark IV

Canon 5D Mark III
Canon 5D Mark IV
  • $2699
  • 35mm
  • Less expensive
  • Bigger pixels
  • $3199
  • 35mm
  • Shoot 4K video
  • Touchscreen
Sony A77 II
Canon 5D Mark IV
  • $1198
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $3199
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Sony A850

Canon 5D Mark III
Sony A850
  • $2699
  • 35mm
  • Lens selection
  • Higher effective ISO
  • $2219
  • 35mm
  • In-Camera Image Stabilization
Sony A77 II
Sony A850
  • $1198
  • APS-C
  • Focus peaking
  • Tilt-swivel screen
  • $2219
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Sony A99

Canon 5D Mark III
Sony A99
  • $2699
  • 35mm
  • Lens selection
  • Fast startup
  • $1998
  • 35mm
  • Less expensive
  • Tilt-swivel screen
Sony A77 II
Sony A99
  • $1198
  • APS-C
  • Built-in Wi-Fi
  • NFC
  • $1998
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Nikon D600

Canon 5D Mark III
Nikon D600
  • $2699
  • 35mm
  • More cross-type AF points
  • Less shutter lag
  • $1497
  • 35mm
  • Less expensive
  • Fast startup
Sony A77 II
Nikon D600
  • $1198
  • APS-C
  • Focus peaking
  • Tilt-swivel screen
  • $1497
  • 35mm
  • Lens selection
  • Larger sensor
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