• 35mm 861.6mm2
  • 42.4 megapixels
  • ISO 100 - 32,000
  • 1 inch 116.2mm2
  • 20.2 megapixels
  • 24.00mm - 100.00mm (35mm eq.)

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Differences

Sony A7R III advantages over Canon G7X Mark III

  • Larger sensor
    35mm vs 1 inch
    More sensor area. Bigger is (generally) better.
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Bigger pixels
    ~ 4.51 vs 2.41 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
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 650 vs 235 shots
    Capture more photos
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More pixels
    42.4 vs 20.2 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Higher extended ISO
    102400 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Canon G7X Mark III advantages over Sony A7R III

  • Less expensive
    $749* vs $2198
    Save money for lenses or accessories
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Integrated ND filter
    Yes vs No
    Shoot in daylight with a large aperture or slow shutter
  • Thinner
    41 mm vs 73 mm
    Thinner
  • Higher max flash sync
    1/2000 vs 1/250 sec
    Reduce the effect of ambient light in flash shots
  • Lighter weight
    304g vs 657g
    Lighter weight
  • Less shutter lag
    0.15 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 JPEG shooting
    20.0 fps vs 9.9 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    125 vs 82 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    30.0 fps vs 9.2 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    76 vs 30 shots
    Larger buffer for RAW shots (burst mode)
  • Faster shutter
    1/25600 vs 1/8000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • Built-in Bluetooth
    Both provide
    Always-on wireless connectivity
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures
  • Slow-motion videos
    Both provide
    Shoot slow-motion videos

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera

User reviews

Buy From

Your purchases support this site

Buy the Sony A7R III

Your purchases support this site

Buy the Canon G7X Mark III

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.

The Competition

Compared to Sony A7R II

Sony A7R III
Sony A7R II
  • $2348
  • 35mm
  • Less expensive
  • Touchscreen
  • $2898
  • 35mm
  • In-camera panoramas
Canon G7X Mark III
Sony A7R II
  • $1074
  • 1 inch
  • Less expensive
  • Touchscreen
  • $2898
  • 35mm
  • Larger sensor
  • Eye-level viewfinder

Compared to Canon G7X Mark II

Sony A7R III
Canon G7X Mark II
  • $2348
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
  • $816
  • 1 inch
  • Less expensive
  • Internal flash
Canon G7X Mark III
Canon G7X Mark II
  • $1074
  • 1 inch
  • Shoot 4K video
  • In-camera panoramas
  • $816
  • 1 inch
  • Less expensive
  • NFC

Compared to Canon G5X Mark II

Sony A7R III
Canon G5X Mark II
  • $2348
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $899
  • 1 inch
  • Less expensive
  • In-camera panoramas
Canon G7X Mark III
Canon G5X Mark II
  • $1074
  • 1 inch
  • Less expensive
  • External Mic Jack
  • $899
  • 1 inch
  • Eye-level viewfinder
  • More telephoto lens reach

Compared to Sony A7R IV

Sony A7R III
Sony A7R IV
  • $2348
  • 35mm
  • Less expensive
  • Bigger pixels
  • $3287
  • 35mm
  • Fast startup
  • More pixels
Canon G7X Mark III
Sony A7R IV
  • $1074
  • 1 inch
  • Less expensive
  • In-camera panoramas
  • $3287
  • 35mm
  • Larger sensor
  • Eye-level viewfinder

Compared to Nikon Z7 II

Sony A7R III
Nikon Z7 II
  • $2348
  • 35mm
  • Less expensive
  • High resolution composite
  • $2330
  • 35mm
  • Top deck display
  • Newer
Canon G7X Mark III
Nikon Z7 II
  • $1074
  • 1 inch
  • Less expensive
  • In-camera panoramas
  • $2330
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
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