• 35mm 864.0mm2
  • 30.3 megapixels
  • ISO 100 - 40,000
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 25,600

Buy From

Differences

Canon EOS R advantages over Olympus E-M1 Mark III

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.36 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • More dots on screen
    2100k vs 1037k dots
    Can mean greater resolution or a brighter screen
  • More pixels
    30.3 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
    102400 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-M1 Mark III advantages over Canon EOS R

  • 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
  • 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 1/8000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • 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
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash

User reviews

Buy From

Your purchases support this site

Buy the Canon EOS R
Body Only
  • Body Only
  • Kit with 24-105mm lens
All EOS R Deals

Your purchases support this site

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

Review Excerpt

  • Very good overall image quality; Good dynamic range & very good high ISO performance; Excellent Dual Pixel CMOS AF performance; Sharp native lenses; Great performance with adapted optics; Compact design; Fully articulating LCD.

  • Sensor performance lags behind competition; No In-Body Image Stabilization; Sluggish burst speed with C-AF; Mediocre battery life; No 4Kp60; 1.7x 4K crop; Ergonomics could be better.

  • Read our Canon EOS R Review

The Competition

Compared to Sony A7 III

Canon EOS R
Sony A7 III
  • $1499
  • 35mm
  • Tilt-swivel screen
  • More telephoto lens reach
  • $1865
  • 35mm
  • Less expensive
  • In-Camera Image Stabilization

Compare Canon EOS R vs Sony A7 III

Olympus E-M1 Mark III
Sony A7 III
  • $1649
  • 4/3
  • Lens selection
  • Tilt-swivel screen
  • $1865
  • 35mm
  • Less expensive
  • Larger sensor

Compare Olympus E-M1 Mark III vs Sony A7 III

Compared to Nikon Z7

Canon EOS R
Nikon Z7
  • $1499
  • 35mm
  • Less expensive
  • Tilt-swivel screen
  • $2147
  • 35mm
  • In-Camera Image Stabilization
  • Fast startup

Compare Canon EOS R vs Nikon Z7

Olympus E-M1 Mark III
Nikon Z7
  • $1649
  • 4/3
  • Less expensive
  • Tilt-swivel screen
  • $2147
  • 35mm
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M1 Mark III vs Nikon Z7

Compared to Nikon Z6

Canon EOS R
Nikon Z6
  • $1499
  • 35mm
  • Tilt-swivel screen
  • More telephoto lens reach
  • $1396
  • 35mm
  • Less expensive
  • In-Camera Image Stabilization

Compare Canon EOS R vs Nikon Z6

Olympus E-M1 Mark III
Nikon Z6
  • $1649
  • 4/3
  • Tilt-swivel screen
  • High resolution composite
  • $1396
  • 35mm
  • Larger sensor
  • Less expensive

Compare Olympus E-M1 Mark III vs Nikon Z6

Compared to Panasonic G95

Canon EOS R
Panasonic G95
  • $1499
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $848
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization

Compare Canon EOS R vs Panasonic G95

Olympus E-M1 Mark III
Panasonic G95
  • $1649
  • 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 R
OM System OM-1
  • $1499
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $2200
  • 4/3
  • In-Camera Image Stabilization
  • High resolution composite

Compare Canon EOS R vs OM System OM-1

Olympus E-M1 Mark III
OM System OM-1
  • $1649
  • 4/3
  • $2200
  • 4/3
  • Newer
  • Higher-res screen

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

Compare Other Cameras?