• APS-C 332.3mm2
  • 18.0 megapixels
  • ISO 100 - 12,800
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 25,600

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Differences

Canon EOS M advantages over Olympus E-M1 Mark III

  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.30 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • Thinner
    32 mm vs 68 mm
    Thinner
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos

Olympus E-M1 Mark III advantages over Canon EOS M

  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • 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
  • Shoot 4K video
    4K (DCI) 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
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Newer
    5 years vs 12 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
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster shutter
    1/32000 vs 1/4000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • 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

  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Olympus E-M1 Mark III
Body Only
  • Body Only
  • Kit with 12-100mm f/4 Lens
  • Kit with 12-40mm Lens
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Review Excerpt

  • Excellent image quality similar to Rebel T4i, T5i and SL1 DSLRs, with 18-megapixel APS-C-type sensor delivering considerable resolution for a mirrorless camera; Solid build and sleek design; Bright, high-resolution 3-inch LCD touchscreen monitor; Full 1080p HD video recording that's virtually silent with an STM lens.

  • Barely acceptable autofocus speed still lags far behind most mirrorless cameras despite firmware update fix; Limited physical controls and buttons, including no Program, Priority, or Manual on Mode dial; Lacks built-in flash or electronic viewfinder option; Only two compact EF-M mount lenses currently available.

  • Read our Canon EOS M Review

The Competition

Compared to Sony NEX-C3

Canon EOS M
Sony NEX-C3
  • $600
  • APS-C
  • Touchscreen
  • On-sensor phase detect
  • $559
  • APS-C
  • Lens selection
  • In-camera panoramas

Compare Canon EOS M vs Sony NEX-C3

Olympus E-M1 Mark III
Sony NEX-C3
  • $1699
  • 4/3
  • Lens selection
  • Focus peaking
  • $559
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M1 Mark III vs Sony NEX-C3

Compared to Sony NEX-5N

Canon EOS M
Sony NEX-5N
  • $600
  • APS-C
  • Less expensive
  • Touchscreen
  • $700
  • APS-C
  • Lens selection
  • Larger sensor

Compare Canon EOS M vs Sony NEX-5N

Olympus E-M1 Mark III
Sony NEX-5N
  • $1699
  • 4/3
  • Lens selection
  • Focus peaking
  • $700
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M1 Mark III vs Sony NEX-5N

Compared to Sony NEX-5R

Canon EOS M
Sony NEX-5R
  • $600
  • APS-C
  • Less expensive
  • External Mic Jack
  • $499
  • APS-C
  • Lens selection
  • Focus peaking

Compare Canon EOS M vs Sony NEX-5R

Olympus E-M1 Mark III
Sony NEX-5R
  • $1699
  • 4/3
  • Lens selection
  • Tilt-swivel screen
  • $499
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M1 Mark III vs Sony NEX-5R

Compared to Panasonic G95

Canon EOS M
Panasonic G95
  • $600
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $848
  • 4/3
  • Tilt-swivel screen
  • Lens selection

Compare Canon EOS M vs Panasonic G95

Olympus E-M1 Mark III
Panasonic G95
  • $1699
  • 4/3
  • High resolution composite
  • On-sensor phase detect
  • $848
  • 4/3
  • Less expensive
  • In-camera panoramas

Compare Olympus E-M1 Mark III vs Panasonic G95

Compared to OM System OM-1

Canon EOS M
OM System OM-1
  • $600
  • APS-C
  • Less expensive
  • Larger sensor
  • $2200
  • 4/3
  • Tilt-swivel screen
  • Lens selection

Compare Canon EOS M vs OM System OM-1

Olympus E-M1 Mark III
OM System OM-1
  • $1699
  • 4/3
  • $2200
  • 4/3
  • Newer
  • Higher-res screen

Compare Olympus E-M1 Mark III vs OM System OM-1

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