• APS-C 337.5mm2
  • 32.5 megapixels
  • ISO 100 - 25,600
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 25,600

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Differences

Canon 90D advantages over Olympus E-M1 Mark III

  • Less expensive
    $1349 vs $2499
    Save money for lenses or accessories
  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • More pixels
    32.5 vs 20.4 megapixels
    Higher resolution photos
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-M1 Mark III advantages over Canon 90D

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • 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 1/16000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Tilt-swivel screen
    Both provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • 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
  • Headphone jack
    Both provide
    Monitor audio recording while you shoot video
  • 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 GPS
    Neither provide
    Geotag your photos

User reviews

Buy From

Your purchases support this site

Buy the Canon 90D

Your purchases support this site

Buy the Olympus E-M1 Mark III

Review Excerpt

  • Highest resolution Canon APS-C camera yet; Great image quality; Faster 10fps burst shooting; Very fast autofocus; Dual Pixel CMOS AF in Live View; 4K video; 1080p120 slow-mo video.

  • Low-pass filter reduces fine detail from high-res sensor; High ISO performance isn't as good as some rival cameras; Video recording limited to 29:59.

The Competition

Compared to Canon 80D

Canon 90D
Canon 80D
  • $1199
  • APS-C
  • Shoot 4K video
  • Built-in Bluetooth
  • $1094
  • APS-C
  • Less expensive
  • Bigger pixels
Olympus E-M1 Mark III
Canon 80D
  • $1799
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $1094
  • APS-C
  • Less expensive
  • Larger sensor

Compared to Olympus E-M1 II

Canon 90D
Olympus E-M1 II
  • $1199
  • APS-C
  • Larger sensor
  • Fast startup
  • $1399
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
Olympus E-M1 Mark III
Olympus E-M1 II
  • $1799
  • 4/3
  • Newer
  • $1399
  • 4/3
  • Less expensive

Compared to Canon 77D

Canon 90D
Canon 77D
  • $1199
  • APS-C
  • Shoot 4K video
  • Longer stills battery life
  • $549
  • APS-C
  • Less expensive
  • NFC
Olympus E-M1 Mark III
Canon 77D
  • $1799
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Less expensive
  • Larger sensor

Compared to Nikon D7500

Canon 90D
Nikon D7500
  • $1199
  • APS-C
  • Tilt-swivel screen
  • On-sensor phase detect
  • $897
  • APS-C
  • Bigger pixels
  • Fast startup
Olympus E-M1 Mark III
Nikon D7500
  • $1799
  • 4/3
  • Tilt-swivel screen
  • Focus peaking
  • $897
  • APS-C
  • Less expensive
  • Larger sensor

Compared to Panasonic G95

Canon 90D
Panasonic G95
  • $1199
  • APS-C
  • Larger sensor
  • Fast startup
  • $998
  • 4/3
  • Less expensive
  • Focus peaking
Olympus E-M1 Mark III
Panasonic G95
  • $1799
  • 4/3
  • High resolution composite
  • On-sensor phase detect
  • $998
  • 4/3
  • Less expensive
  • In-camera panoramas
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