• 35mm 861.6mm2
  • 42.4 megapixels
  • ISO 100 - 32,000
  • APS-C 337.5mm2
  • 32.5 megapixels
  • ISO 100 - 25,600

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Differences

Sony A7R III advantages over Canon 90D

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 4.51 vs 3.23 microns
    Better low-light and dynamic range (all else equal)
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • More viewfinder magnification
    0.78x vs 0.59x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    42.4 vs 32.5 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Higher extended ISO
    102400 vs 51200 ISO
    Higher extended ISO can give more low-light flexibility

Canon 90D advantages over Sony A7R III

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Less expensive
    $1349 vs $2198
    Save money for lenses or accessories
  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • Fast startup
    ~0.40 vs 1.7 sec
    Faster startup lets you catch the moment
  • Longer stills battery life
    More info 1300 vs 650 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Newer
    3 years vs 5 years old
    Newer cameras often support more advanced features
  • Less shutter lag
    0.13 vs 0.25 sec
    Focus and take a photo quickly (wide angle)
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • Built-in Bluetooth
    Both provide
    Always-on wireless connectivity
  • On-sensor phase detect
    Both provide
    Usually improves live view and video AF performance
  • 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
  • Headphone jack
    Both provide
    Monitor audio recording while you shoot video
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures
  • Slow-motion videos
    Both provide
    Shoot slow-motion videos

Common Weaknesses

  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Built-in GPS
    Neither provide
    Geotag your photos

User reviews

Buy From

Your purchases support this site

Buy the Sony A7R III

Your purchases support this site

Buy the Canon 90D

Review Excerpt

  • Fantastic image quality; Improved dynamic range over its predecessor; Very good high ISO performance; Much improved real-world AF performance; Class-leading burst rates, even with RAW; Improved 5-axis in-body image stabilization; Better 4K video quality; 1080/120fps video; Dual card slots; Significantly better battery life.

  • Expensive; Menus still confusing; UHS-II support only on one card slot; No optical low-pass filter means greater risk of moire; No built-in flash; Buffer clearing still slow despite UHS-II support.

  • Highest resolution Canon APS-C camera yet; Great image quality; Faster 10fps burst shooting; Very fast autofocus; Dual Pixel CMOS AF in Live View; 4K video; 1080p120 slow-mo video.

  • Low-pass filter reduces fine detail from high-res sensor; High ISO performance isn't as good as some rival cameras; Video recording limited to 29:59.

The Competition

Compared to Sony A7R II

Sony A7R III
Sony A7R II
  • $2498
  • 35mm
  • Less expensive
  • Touchscreen
  • $2898
  • 35mm
  • In-camera panoramas
Canon 90D
Sony A7R II
  • $1199
  • APS-C
  • Lens selection
  • Less expensive
  • $2898
  • 35mm
  • Focus peaking
  • Larger sensor

Compared to Canon 80D

Sony A7R III
Canon 80D
  • $2498
  • 35mm
  • Focus peaking
  • Larger sensor
  • $935
  • APS-C
  • Lens selection
  • Less expensive
Canon 90D
Canon 80D
  • $1199
  • APS-C
  • Shoot 4K video
  • Built-in Bluetooth
  • $935
  • APS-C
  • Less expensive
  • Bigger pixels

Compared to Nikon D7500

Sony A7R III
Nikon D7500
  • $2498
  • 35mm
  • Focus peaking
  • Larger sensor
  • $998
  • APS-C
  • Lens selection
  • Less expensive
Canon 90D
Nikon D7500
  • $1199
  • APS-C
  • Tilt-swivel screen
  • On-sensor phase detect
  • $998
  • APS-C
  • Bigger pixels
  • Fast startup

Compared to Sony A7R IV

Sony A7R III
Sony A7R IV
  • $2498
  • 35mm
  • Less expensive
  • Bigger pixels
  • $3387
  • 35mm
  • Fast startup
  • Newer
Canon 90D
Sony A7R IV
  • $1199
  • APS-C
  • Lens selection
  • Less expensive
  • $3387
  • 35mm
  • Focus peaking
  • Larger sensor

Compared to Nikon Z7 II

Sony A7R III
Nikon Z7 II
  • $2498
  • 35mm
  • Less expensive
  • High resolution composite
  • $2997
  • 35mm
  • Top deck display
  • Newer
Canon 90D
Nikon Z7 II
  • $1199
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $2997
  • 35mm
  • Focus peaking
  • Larger sensor
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