• APS-C 332.3mm2
  • 24.2 megapixels
  • ISO 100 - 25,600
  • 35mm 861.6mm2
  • 42.4 megapixels
  • ISO 100 - 32,000

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Differences

Canon EOS M100 advantages over Sony A7R III

  • Less expensive
    $399 vs $3696
    Save money for lenses or accessories
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    35 mm vs 73 mm
    Thinner
  • Lighter weight
    302g vs 657g
    Lighter weight
  • Less shutter lag
    0.11 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

Sony A7R III advantages over Canon EOS M100

  • 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
    ~ 4.51 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
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Better color depth
    26.0 vs 23.5 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    3,523 vs 1,272 iso
    Take photos in low light with less noise
  • More dynamic range
    14.7 vs 12.9 evs
    Retain detail in highlight and shadows
  • Longer video battery life
    100 vs 80 minutes
    Capture more video
  • Longer stills battery life
    More info 650 vs 295 shots
    Capture more photos
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More pixels
    42.4 vs 24.2 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
  • Faster JPEG shooting
    9.9 fps vs 6.1 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    9.2 fps vs 6.1 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    30 vs 19 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
    102400 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
  • Built-in Bluetooth
    Both provide
    Always-on wireless connectivity
  • On-sensor phase detect
    Both provide
    Usually improves live view and video AF performance
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • 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

Buy From

Your purchases support this site

Buy the Canon EOS M100

Your purchases support this site

Buy the Sony A7R 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 Canon EOS M3

Canon EOS M100
Canon EOS M3
  • $399
  • APS-C
  • Less expensive
  • Fast startup
  • $549
  • APS-C
  • More telephoto lens reach
  • External Mic Jack
Sony A7R III
Canon EOS M3
  • $2798
  • 35mm
  • Lens selection
  • Larger sensor
  • $549
  • APS-C
  • Less expensive
  • Internal flash

Compared to Sony A7R II

Canon EOS M100
Sony A7R II
  • $399
  • APS-C
  • Less expensive
  • Touchscreen
  • $1598
  • 35mm
  • Lens selection
  • Larger sensor
Sony A7R III
Sony A7R II
  • $2798
  • 35mm
  • Touchscreen
  • High resolution composite
  • $1598
  • 35mm
  • Less expensive
  • In-camera panoramas

Compared to Canon EOS M10

Canon EOS M100
Canon EOS M10
  • $399
  • APS-C
  • Less expensive
  • Focus peaking
  • $599
  • APS-C
  • Bigger pixels
  • Bigger JPEG buffer
Sony A7R III
Canon EOS M10
  • $2798
  • 35mm
  • Lens selection
  • Focus peaking
  • $599
  • APS-C
  • Less expensive
  • Internal flash

Compared to Fujifilm X-E3

Canon EOS M100
Fujifilm X-E3
  • $399
  • APS-C
  • Less expensive
  • Tiltable Screen
  • $799
  • APS-C
  • Lens selection
  • Larger sensor
Sony A7R III
Fujifilm X-E3
  • $2798
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization
  • $799
  • APS-C
  • Less expensive
  • In-camera panoramas

Compared to Canon EOS R

Canon EOS M100
Canon EOS R
  • $399
  • APS-C
  • Less expensive
  • Fast startup
  • $2299
  • 35mm
  • Larger sensor
  • Tilt-swivel screen
Sony A7R III
Canon EOS R
  • $2798
  • 35mm
  • In-Camera Image Stabilization
  • High resolution composite
  • $2299
  • 35mm
  • Tilt-swivel screen
  • Bigger pixels
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