• APS-C 366.6mm2
  • 24.2 megapixels
  • 28.00mm (35mm eq.)
  • 4/3 226.2mm2
  • 20.3 megapixels
  • ISO 200 - 25,600

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Differences

Ricoh GR III advantages over Olympus E-M10 IV

  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 3.92 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Integrated ND filter
    Yes vs No
    Shoot in daylight with a large aperture or slow shutter
  • Thinner
    33 mm vs 49 mm
    Thinner
  • Lighter weight
    257g vs 383g
    Lighter weight
  • More pixels
    24.2 vs 20.3 megapixels
    Higher resolution photos
  • Optional anti-aliasing filter
    Optional vs None
    Lets you choose sharper photos or reduced moiré
  • Longer exposure
    1200 vs 60 sec
    Long exposures for night shots
  • Higher extended ISO
    102400 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-M10 IV advantages over Ricoh GR III

  • Less expensive
    $699 vs $897*
    Save money for lenses or accessories
  • 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
  • Shoot 4K video
    4K (DCI) vs 1080p
    Make sure you have a fast computer
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/16000 vs 1/4000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • Built-in Bluetooth
    Both provide
    Always-on wireless connectivity
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • 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 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
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

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Review Excerpt

The Competition

Compared to Olympus E-M10 III

Ricoh GR III
Olympus E-M10 III
  • $984
  • APS-C
  • Larger sensor
  • Fast startup
  • $549
  • 4/3
  • Focus peaking
  • Eye-level viewfinder

Compare Ricoh GR III vs Olympus E-M10 III

Olympus E-M10 IV
Olympus E-M10 III
  • $666
  • 4/3
  • Built-in Bluetooth
  • Newer
  • $549
  • 4/3

Compare Olympus E-M10 IV vs Olympus E-M10 III

Compared to Olympus E-M5 III

Ricoh GR III
Olympus E-M5 III
  • $984
  • APS-C
  • Less expensive
  • Larger sensor
  • $924
  • 4/3
  • Focus peaking
  • Tilt-swivel screen

Compare Ricoh GR III vs Olympus E-M5 III

Olympus E-M10 IV
Olympus E-M5 III
  • $666
  • 4/3
  • Less expensive
  • Longer video battery life
  • $924
  • 4/3
  • Tilt-swivel screen
  • High resolution composite

Compare Olympus E-M10 IV vs Olympus E-M5 III

Compared to Olympus E-PL10

Ricoh GR III
Olympus E-PL10
  • $984
  • APS-C
  • Larger sensor
  • On-sensor phase detect
  • $549
  • 4/3
  • Less expensive
  • Focus peaking

Compare Ricoh GR III vs Olympus E-PL10

Olympus E-M10 IV
Olympus E-PL10
  • $666
  • 4/3
  • Eye-level viewfinder
  • More pixels
  • $549
  • 4/3
  • Less expensive
  • In-camera panoramas

Compare Olympus E-M10 IV vs Olympus E-PL10

Compared to Panasonic G100

Ricoh GR III
Panasonic G100
  • $984
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $599
  • 4/3
  • Less expensive
  • Tilt-swivel screen

Compare Ricoh GR III vs Panasonic G100

Olympus E-M10 IV
Panasonic G100
  • $666
  • 4/3
  • In-Camera Image Stabilization
  • More telephoto lens reach
  • $599
  • 4/3
  • Less expensive
  • Tilt-swivel screen

Compare Olympus E-M10 IV vs Panasonic G100

Compared to Canon EOS M50 II

Ricoh GR III
Canon EOS M50 II
  • $984
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $646
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compare Ricoh GR III vs Canon EOS M50 II

Olympus E-M10 IV
Canon EOS M50 II
  • $666
  • 4/3
  • Lens selection
  • In-Camera Image Stabilization
  • $646
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compare Olympus E-M10 IV vs Canon EOS M50 II

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