• 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600
  • 35mm 858.0mm2
  • 33.0 megapixels
  • ISO 100 - 51,200

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Differences

Olympus E-M10 advantages over Sony A7 IV

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • More telephoto lens reach
    84 mm vs 70 mm
    Capture objects farther away with the kit lens
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    45 mm vs 79 mm
    Thinner
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots

Sony A7 IV advantages over Olympus E-M10

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • Bigger pixels
    ~ 5.12 vs 3.75 microns
    Better low-light and dynamic range (all else equal)
  • Shoot 4K video
    4K (UHD) vs 1080p
    Make sure you have a fast computer
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Newer
    3 years vs 11 years old
    Newer cameras often support more advanced features
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More dots on screen
    3680k vs 1037k dots
    Can mean greater resolution or a brighter screen
  • More pixels
    33.0 vs 16.1 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • 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
    10.0 fps vs 8.1 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    828 vs 19 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    204800 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
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • 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

Common Weaknesses

  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera

User reviews

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Your purchases support this site

Buy the Olympus E-M10

Review Excerpt

  • Great image quality especially from RAW files; Excellent dynamic range for a Four Thirds sensor; Very good high ISO performance; Realistic colors and excellent hue accuracy; Built-in Wi-Fi with remote control and sharing features; Improved HD video; Lightweight and very portable; Built-in pop-up flash; Minimal EVF lag time.

  • Contrast-Detect AF struggles with small and low-contrast subjects; Mediocre battery life; No external microphone or headphone jack; Mediocre burst speed with continuous AF; No weather sealing; Heavy-handed high ISO noise reduction.

The Competition

Compared to Panasonic GX7

Olympus E-M10
Panasonic GX7
  • $399
  • 4/3
  • Less expensive
  • Higher effective ISO
  • $648
  • 4/3
  • In-camera panoramas
  • Fast startup
Sony A7 IV
Panasonic GX7
  • $2231
  • 35mm
  • Larger sensor
  • Tilt-swivel screen
  • $648
  • 4/3
  • Lens selection
  • More telephoto lens reach

Compared to Olympus E-M10 II

Olympus E-M10
Olympus E-M10 II
  • $399
  • 4/3
  • $349
  • 4/3
  • Fast startup
  • Shoots 24p video
Sony A7 IV
Olympus E-M10 II
  • $2231
  • 35mm
  • Larger sensor
  • Tilt-swivel screen
  • $349
  • 4/3
  • Lens selection
  • Less expensive

Compared to Panasonic GX85

Olympus E-M10
Panasonic GX85
  • $399
  • 4/3
  • Higher effective ISO
  • More telephoto lens reach
  • $598
  • 4/3
  • Shoot 4K video
  • In-camera panoramas
Sony A7 IV
Panasonic GX85
  • $2231
  • 35mm
  • Tilt-swivel screen
  • Larger sensor
  • $598
  • 4/3
  • Lens selection
  • Less expensive

Compared to Nikon Z7 II

Olympus E-M10
Nikon Z7 II
  • $399
  • 4/3
  • More telephoto lens reach
  • Internal flash
  • $2330
  • 35mm
  • Larger sensor
  • Bigger pixels
Sony A7 IV
Nikon Z7 II
  • $2231
  • 35mm
  • Tilt-swivel screen
  • Bigger pixels
  • $2330
  • 35mm
  • On-sensor phase detect
  • Top deck display

Compared to Nikon Z6 II

Olympus E-M10
Nikon Z6 II
  • $399
  • 4/3
  • More telephoto lens reach
  • Internal flash
  • $1747
  • 35mm
  • Larger sensor
  • Bigger pixels
Sony A7 IV
Nikon Z6 II
  • $2231
  • 35mm
  • Tilt-swivel screen
  • In-camera panoramas
  • $1747
  • 35mm
  • Bigger pixels
  • On-sensor phase detect
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