• APS-C 337.5mm2
  • 20.2 megapixels
  • ISO 100 - 12,800
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 25,600

Buy From

Differences

Canon 70D advantages over Olympus E-M1 Mark III

  • Less expensive
    $999 vs $2499
    Save money for lenses or accessories
  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.11 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • 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
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos

Olympus E-M1 Mark III advantages over Canon 70D

  • 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
  • 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
  • Newer
    5 years vs 11 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 1/8000 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
  • 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
  • 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
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Your purchases support this site

Buy the Canon 70D
Body Only
  • Body Only
  • Kit with 18-135mm Lens
  • Kit with 18-55mm Lens
All 70D 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

  • Dual Pixel CMOS AF delivers full-time continuous autofocus (with phase detect at every pixel in framing area) for video and Live View still shooting; Full HD (1080p) video recording with pro-level features and quality; Improved resolution and good high ISO performance; Excellent Wi-Fi remote shooting with full exposure controls; 3-inch articulating LCD touchscreen.

  • Image quality only improved slightly over 60D; Dynamic range still lags behind competing models; May not feature enough upgrades to convince people to step up from 60D.

  • Read our Canon 70D Review

The Competition

Compared to Nikon D7100

Canon 70D
Nikon D7100
  • $1149
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
  • $745
  • APS-C
  • Less expensive
  • Fast startup

Compare Canon 70D vs Nikon D7100

Olympus E-M1 Mark III
Nikon D7100
  • $1649
  • 4/3
  • Focus peaking
  • Tilt-swivel screen
  • $745
  • APS-C
  • Less expensive
  • Larger sensor

Compare Olympus E-M1 Mark III vs Nikon D7100

Compared to Sony A77 II

Canon 70D
Sony A77 II
  • $1149
  • APS-C
  • Lens selection
  • Less expensive
  • $1198
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization

Compare Canon 70D vs Sony A77 II

Olympus E-M1 Mark III
Sony A77 II
  • $1649
  • 4/3
  • Lens selection
  • Shoot 4K video
  • $1198
  • APS-C
  • Less expensive
  • Larger sensor

Compare Olympus E-M1 Mark III vs Sony A77 II

Compared to Nikon D7200

Canon 70D
Nikon D7200
  • $1149
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $1016
  • APS-C
  • Fast startup
  • NFC

Compare Canon 70D vs Nikon D7200

Olympus E-M1 Mark III
Nikon D7200
  • $1649
  • 4/3
  • Tilt-swivel screen
  • Focus peaking
  • $1016
  • APS-C
  • Less expensive
  • Larger sensor

Compare Olympus E-M1 Mark III vs Nikon D7200

Compared to Panasonic G95

Canon 70D
Panasonic G95
  • $1149
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $848
  • 4/3
  • Focus peaking
  • Less expensive

Compare Canon 70D 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 70D
OM System OM-1
  • $1149
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $2200
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization

Compare Canon 70D 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?