• APS-C 332.3mm2
  • 24.2 megapixels
  • ISO 100 - 12,800
  • 35mm 847.3mm2
  • 24.2 megapixels
  • ISO 100 - 51,200

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Differences

Canon EOS M3 advantages over Sony A7 III

  • Less expensive
    $549 vs $2098
    Save money for lenses or accessories
  • More telephoto lens reach
    88 mm vs 70 mm
    Capture objects farther away with the kit lens
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    44 mm vs 73 mm
    Thinner
  • Bigger JPEG buffer
    Unlimited vs 163 shots
    Take more JPEG shots before waiting (burst mode)

Sony A7 III advantages over Canon EOS M3

  • Lens selection
    Good vs Limited
    Better lens selection gives you more options
  • Larger sensor
    35mm vs APS-C
    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
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 5.93 vs 3.72 microns
    Better low-light and dynamic range (all else equal)
  • Shoot 4K video
    4K (UHD) vs 1080p
    Make sure you have a fast computer
  • Fast startup
    ~1.70 vs 2.4 sec
    Faster startup lets you catch the moment
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Higher effective ISO
    3,730 vs 1,169 iso
    Take photos in low light with less noise
  • More dynamic range
    14.7 vs 11.8 evs
    Retain detail in highlight and shadows
  • Longer stills battery life
    More info 710 vs 250 shots
    Capture more photos
  • Newer
    6 months vs 3 years old
    Newer cameras often support more advanced features
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Faster JPEG shooting
    9.9 fps vs 4.2 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    9.7 fps vs 4.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    33 vs 4 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    204800 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • NFC
    Both provide
    Simplifies pairing your camera with supported phones
  • 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
  • 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 panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • 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

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Your purchases support this site

Buy the Canon EOS M3

Your purchases support this site

Buy the Sony A7 III

Review Excerpt

  • DSLR image quality & resolution in a mirrorless body; Higher-res 24MP APS-C sensor; Much improved AF performance; Better ergonomics with full PASM dial; Built-in Wi-Fi & NFC; Tilting LCD.

  • No built-in EVF; Limited native lens selection; Slow burst mode; Shallow buffer depth with RAW files; No 60p video frame rate or 4K video option.

  • New 24MP sensor offers excellent image quality; Outstanding high ISO performance and dynamic range; Improved JPEG colors; Improved build quality; Fast autofocus; Excellent 4K video; Very good battery life.

  • Buffer clearing can be slow even with fast UHS-II cards; UHS-II support only on one card slot; No losslessly compressed RAW option; Dedicated battery charger not included; Menus are still confusing; No built-in flash.

The Competition

Compared to Sony A6000

Canon EOS M3
Sony A6000
  • $549
  • APS-C
  • Touchscreen
  • More telephoto lens reach
  • $448
  • APS-C
  • Lens selection
  • Larger sensor
Sony A7 III
Sony A6000
  • $1965
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization
  • $448
  • APS-C
  • Less expensive
  • In-camera panoramas

Compared to Samsung NX3000

Canon EOS M3
Samsung NX3000
  • $549
  • APS-C
  • Focus peaking
  • Touchscreen
  • $442
  • APS-C
  • Larger sensor
  • Less expensive
Sony A7 III
Samsung NX3000
  • $1965
  • 35mm
  • Lens selection
  • Focus peaking
  • $442
  • APS-C
  • Less expensive
  • In-camera panoramas

Compared to Sony A5100

Canon EOS M3
Sony A5100
  • $549
  • APS-C
  • More telephoto lens reach
  • External Mic Jack
  • $398
  • APS-C
  • Lens selection
  • Larger sensor
Sony A7 III
Sony A5100
  • $1965
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
  • $398
  • APS-C
  • Less expensive
  • In-camera panoramas

Compared to Nikon Z6

Canon EOS M3
Nikon Z6
  • $549
  • APS-C
  • Less expensive
  • NFC
  • $1997
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
Sony A7 III
Nikon Z6
  • $1965
  • 35mm
  • Less expensive
  • NFC
  • $1997
  • 35mm
  • Top deck display
  • More dots on screen

Compared to Canon EOS R

Canon EOS M3
Canon EOS R
  • $549
  • APS-C
  • Less expensive
  • NFC
  • $2299
  • 35mm
  • Larger sensor
  • Tilt-swivel screen
Sony A7 III
Canon EOS R
  • $1965
  • 35mm
  • Less expensive
  • In-Camera Image Stabilization
  • $2299
  • 35mm
  • Tilt-swivel screen
  • More telephoto lens reach
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