• 4/3 226.2mm2
  • 16.1 megapixels
  • ISO 200 - 25,600
  • 35mm 861.6mm2
  • 42.4 megapixels
  • ISO 100 - 32,000

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Differences

Olympus E-M10 III advantages over Sony A7R III

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Less expensive
    $799 vs $2498
    Save money for lenses or accessories
  • Fast startup
    ~1.00 vs 1.7 sec
    Faster startup lets you catch the moment
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    49 mm vs 73 mm
    Thinner
  • Less shutter lag
    0.14 vs 0.25 sec
    Focus and take a photo quickly (wide angle)
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Bigger JPEG buffer
    Unlimited vs 82 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light

Sony A7R III advantages over Olympus E-M10 III

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.51 vs 3.78 microns
    Better low-light and dynamic range (all else equal)
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Longer video battery life
    100 vs 80 minutes
    Capture more video
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 650 vs 330 shots
    Capture more photos
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More viewfinder magnification
    0.78x vs 0.62x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    42.4 vs 16.1 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Faster JPEG shooting
    9.9 fps vs 8.6 fps
    Faster JPEG shooting (burst mode)
  • Higher extended ISO
    102400 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • 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
  • Slow-motion videos
    Both provide
    Shoot slow-motion videos

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
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera

User reviews

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  • Body Only
  • Kit with 24-70mm f/2.8 GM lens
  • Kit with 24-70mm f/4 lens
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Review Excerpt

  • Superbly-built, comfortable and compact body; Pairs beautifully with pancake kit lens; Excellent image quality; Excellent performance in most respects; Great single-shot autofocus; Really nice viewfinder and touch-screen display; Friendlier user interface courts amateurs.

  • Some controls are a bit small and tightly-packed; Hand grips are still a bit modestly-sized for larger lenses; Continuous and video autofocus just isn't up to snuff; New user interface can feel limiting to advanced photographers; Underwhelming battery life.

  • Read our Olympus E-M10 III Review

  • Fantastic image quality; Improved dynamic range over its predecessor; Very good high ISO performance; Much improved real-world AF performance; Class-leading burst rates, even with RAW; Improved 5-axis in-body image stabilization; Better 4K video quality; 1080/120fps video; Dual card slots; Significantly better battery life.

  • Expensive; Menus still confusing; UHS-II support only on one card slot; No optical low-pass filter means greater risk of moire; No built-in flash; Buffer clearing still slow despite UHS-II support.

  • Read our Sony A7R III Review

The Competition

Compared to Olympus E-M5 II

Olympus E-M10 III
Olympus E-M5 II
  • $549
  • 4/3
  • Shoot 4K video
  • Internal flash
  • $899
  • 4/3
  • Tilt-swivel screen
  • High resolution composite

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

Sony A7R III
Olympus E-M5 II
  • $2498
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $899
  • 4/3
  • Lens selection
  • Less expensive

Compare Sony A7R III vs Olympus E-M5 II

Compared to Sony A7R II

Olympus E-M10 III
Sony A7R II
  • $549
  • 4/3
  • Lens selection
  • Less expensive
  • $2348
  • 35mm
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M10 III vs Sony A7R II

Sony A7R III
Sony A7R II
  • $2498
  • 35mm
  • Touchscreen
  • High resolution composite
  • $2348
  • 35mm
  • Less expensive
  • In-camera panoramas

Compare Sony A7R III vs Sony A7R II

Compared to Olympus E-M10 II

Olympus E-M10 III
Olympus E-M10 II
  • $549
  • 4/3
  • Shoot 4K video
  • Bigger JPEG buffer
  • $349
  • 4/3
  • Less expensive

Compare Olympus E-M10 III vs Olympus E-M10 II

Sony A7R III
Olympus E-M10 II
  • $2498
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $349
  • 4/3
  • Lens selection
  • Less expensive

Compare Sony A7R III vs Olympus E-M10 II

Compared to Panasonic GX85

Olympus E-M10 III
Panasonic GX85
  • $549
  • 4/3
  • More telephoto lens reach
  • Higher max flash sync
  • $598
  • 4/3
  • Less expensive
  • In-camera panoramas

Compare Olympus E-M10 III vs Panasonic GX85

Sony A7R III
Panasonic GX85
  • $2498
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $598
  • 4/3
  • Lens selection
  • Less expensive

Compare Sony A7R III vs Panasonic GX85

Compared to Nikon Z7 II

Olympus E-M10 III
Nikon Z7 II
  • $549
  • 4/3
  • Less expensive
  • More telephoto lens reach
  • $2330
  • 35mm
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M10 III vs Nikon Z7 II

Sony A7R III
Nikon Z7 II
  • $2498
  • 35mm
  • High resolution composite
  • NFC
  • $2330
  • 35mm
  • Top deck display
  • Newer

Compare Sony A7R III vs Nikon Z7 II

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