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

Buy From

Differences

Canon 5D Mark III advantages over Sony A6300

  • 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 1.4 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    2,293 vs 1,437 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 950 vs 400 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    102400 vs 51200 ISO
    Higher extended ISO can give more low-light flexibility

Sony A6300 advantages over Canon 5D Mark III

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Less expensive
    $998 vs $2900
    Save money for lenses or accessories
  • Shoot 4K video
    4K (UHD) vs 1080p
    Make sure you have a fast computer
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • More dynamic range
    13.7 vs 11.7 evs
    Retain detail in highlight and shadows
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    48 mm vs 76 mm
    Thinner
  • Newer
    3 years vs 7 years old
    Newer cameras often support more advanced features
  • Faster JPEG shooting
    11.1 fps vs 6.0 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    11.1 fps vs 6.0 fps
    Faster RAW shooting in burst mode
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use HDMI output 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

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • In-Camera Image Stabilization
    Neither provide
    Reduces the effects of camera shake at slower shutter speeds
  • 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

User reviews

Buy From

Your purchases support this site

Buy the Canon 5D Mark III

Your purchases support this site

Buy the Sony A6300

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; Improved high-ISO performance; Better JPEG quality; Fast autofocus; Very good subject tracking with real-time live view feature; All-magnesium body construction; 4K video.

  • Slow buffer clearing (no UHS-II support); No touchscreen, Clunky menus; Wi-Fi can be a bit frustrating to use.

The Competition

Compared to Canon 6D

Canon 5D Mark III
Canon 6D
  • $2503
  • 35mm
  • More cross-type AF points
  • Less shutter lag
  • $1232
  • 35mm
  • Less expensive
  • Built-in Wi-Fi
Sony A6300
Canon 6D
  • $898
  • APS-C
  • Less expensive
  • Focus peaking
  • $1232
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Canon 5D Mark IV

Canon 5D Mark III
Canon 5D Mark IV
  • $2503
  • 35mm
  • Less expensive
  • Bigger pixels
  • $3099
  • 35mm
  • Shoot 4K video
  • Touchscreen
Sony A6300
Canon 5D Mark IV
  • $898
  • APS-C
  • Less expensive
  • Focus peaking
  • $3099
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Sony A850

Canon 5D Mark III
Sony A850
  • $2503
  • 35mm
  • Lens selection
  • Higher effective ISO
  • $2219
  • 35mm
  • In-Camera Image Stabilization
Sony A6300
Sony A850
  • $898
  • APS-C
  • Focus peaking
  • Shoot 4K video
  • $2219
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization

Compared to Sony A99

Canon 5D Mark III
Sony A99
  • $2503
  • 35mm
  • Lens selection
  • Fast startup
  • $1998
  • 35mm
  • Less expensive
  • Tilt-swivel screen
Sony A6300
Sony A99
  • $898
  • APS-C
  • Less expensive
  • Shoot 4K video
  • $1998
  • 35mm
  • Tilt-swivel screen
  • Larger sensor

Compared to Nikon D600

Canon 5D Mark III
Nikon D600
  • $2503
  • 35mm
  • More cross-type AF points
  • Less shutter lag
  • $1497
  • 35mm
  • Less expensive
  • Fast startup
Sony A6300
Nikon D600
  • $898
  • APS-C
  • Less expensive
  • Focus peaking
  • $1497
  • 35mm
  • Lens selection
  • Larger sensor
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