• 35mm 861.6mm2
  • 36.4 megapixels
  • ISO 100 - 25,600
  • APS-C 332.3mm2
  • 24.2 megapixels
  • ISO 100 - 12,800

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Differences

Sony A7R 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
  • Bigger pixels
    ~ 4.88 vs 3.72 microns
    Better low-light and dynamic range (all else equal)
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Better color depth
    25.6 vs 22.8 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    2,746 vs 1,169 iso
    Take photos in low light with less noise
  • More dynamic range
    14.1 vs 11.8 evs
    Retain detail in highlight and shadows
  • Longer stills battery life
    More info 340 vs 250 shots
    Capture more photos
  • More pixels
    36.4 vs 24.2 megapixels
    Higher resolution photos
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Bigger RAW buffer
    15 vs 4 shots
    Larger buffer for RAW shots (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Canon EOS M3 advantages over Sony A7R

  • Less expensive
    $850 vs $1000*
    Save money for lenses or accessories
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • 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
  • Less shutter lag
    0.13 vs 0.36 sec
    Focus and take a photo quickly (wide angle)
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Bigger JPEG buffer
    Unlimited vs 15 shots
    Take more JPEG shots before waiting (burst mode)

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • 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
  • 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
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Canon EOS M3

Review Excerpt

  • Incredibly small body for a fully-featured, full-frame camera; Resolution that rivals a medium-format camera; Excellent image quality even at very high sensitivities; Decent performance bearing in mind its extremely high resolution; Accepts existing Alpha-mount and E-mount lenses, and can optionally crop to APS-C image circle.

  • Extreme resolution makes focus and lens quality critical; Modest performance; Loud shutter; Lacks hybrid autofocus of the A7; Mediocre battery life when using electronic viewfinder; Slow X-sync; Limited selection of native Sony FE lenses.

  • 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.

The Competition

Compared to Sony A7

Sony A7R
Sony A7
  • $1399
  • 35mm
  • Higher effective ISO
  • More pixels
  • $748
  • 35mm
  • Less expensive
  • Bigger pixels
Canon EOS M3
Sony A7
  • $850
  • APS-C
  • Touchscreen
  • More telephoto lens reach
  • $748
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Samsung NX3000

Sony A7R
Samsung NX3000
  • $1399
  • 35mm
  • Lens selection
  • Focus peaking
  • $950
  • APS-C
  • Has anti-aliasing filter
  • Faster JPEG shooting
Canon EOS M3
Samsung NX3000
  • $850
  • APS-C
  • Focus peaking
  • Touchscreen
  • $950
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Sony A7R II

Sony A7R
Sony A7R II
  • $1399
  • 35mm
  • Less expensive
  • Lighter weight
  • $2348
  • 35mm
  • In-Camera Image Stabilization
  • Shoot 4K video
Canon EOS M3
Sony A7R II
  • $850
  • APS-C
  • Less expensive
  • Touchscreen
  • $2348
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Fujifilm X-E3

Sony A7R
Fujifilm X-E3
  • $1399
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $699
  • APS-C
  • Less expensive
  • Shoot 4K video
Canon EOS M3
Fujifilm X-E3
  • $850
  • APS-C
  • Tiltable Screen
  • NFC
  • $699
  • APS-C
  • Lens selection
  • Larger sensor

Compared to Canon EOS RP

Sony A7R
Canon EOS RP
  • $1399
  • 35mm
  • Less expensive
  • Focus peaking
  • $949
  • 35mm
  • Tilt-swivel screen
  • Bigger pixels
Canon EOS M3
Canon EOS RP
  • $850
  • APS-C
  • Focus peaking
  • Less expensive
  • $949
  • 35mm
  • Larger sensor
  • Tilt-swivel screen
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