• 35mm 861.6mm2
  • 36.4 megapixels
  • ISO 100 - 25,600
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600

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Differences

Sony A7R advantages over Olympus E-M10

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Bigger pixels
    ~ 4.88 vs 3.75 microns
    Better low-light and dynamic range (all else equal)
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Better color depth
    25.6 vs 22.8 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    2,746 vs 884 iso
    Take photos in low light with less noise
  • More dynamic range
    14.1 vs 12.3 evs
    Retain detail in highlight and shadows
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • More viewfinder magnification
    0.71x vs 0.58x
    Get a bigger view of the scene through the eye-level viewfinder
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • More pixels
    36.4 vs 16.1 megapixels
    Higher resolution photos
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Olympus E-M10 advantages over Sony A7R

  • Less expensive
    $599 vs $1898*
    Save money for lenses or accessories
  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Fast startup
    ~1.30 vs 2.0 sec
    Faster startup lets you catch the moment
  • Touchscreen
    Touch vs No touch
    Select your focus point more intuitively.
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Less shutter lag
    0.23 vs 0.36 sec
    Focus and take a photo quickly (wide angle)
  • Higher max flash sync
    1/250 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    8.1 fps vs 4.0 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    8.1 fps vs 4.0 fps
    Faster RAW shooting in burst mode

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • HDMI out
    Both provide
    Use an external screen 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

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • 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
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Review Excerpt

  • Incredibly small body for a fully-featured, full-frame camera; Resolution that rivals a medium-format camera; Excellent image quality even at very high sensitivities; Decent performance bearing in mind its extremely high resolution; Accepts existing Alpha-mount and E-mount lenses, and can optionally crop to APS-C image circle.

  • Extreme resolution makes focus and lens quality critical; Modest performance; Loud shutter; Lacks hybrid autofocus of the A7; Mediocre battery life when using electronic viewfinder; Slow X-sync; Limited selection of native Sony FE lenses.

  • 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 Sony A7

Sony A7R
Sony A7
  • $1879
  • 35mm
  • Higher effective ISO
  • More pixels
  • $1186
  • 35mm
  • Less expensive
  • Bigger pixels
Olympus E-M10
Sony A7
  • $494
  • 4/3
  • Less expensive
  • Lens selection
  • $1186
  • 35mm
  • Larger sensor
  • NFC

Compared to Olympus E-M5

Sony A7R
Olympus E-M5
  • $1879
  • 35mm
  • Focus peaking
  • Larger sensor
  • $543
  • 4/3
  • Less expensive
  • Lens selection
Olympus E-M10
Olympus E-M5
  • $494
  • 4/3
  • Focus peaking
  • Built-in Wi-Fi
  • $543
  • 4/3
  • Less expensive
  • Wider angle kit lens

Compared to Panasonic GF6

Sony A7R
Panasonic GF6
  • $1879
  • 35mm
  • Focus peaking
  • Larger sensor
  • $447
  • 4/3
  • Less expensive
  • Lens selection
Olympus E-M10
Panasonic GF6
  • $494
  • 4/3
  • Focus peaking
  • Eye-level viewfinder
  • $447
  • 4/3
  • Less expensive
  • NFC

Compared to Panasonic G6

Sony A7R
Panasonic G6
  • $1879
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $500
  • 4/3
  • Lens selection
  • Tilt-swivel screen
Olympus E-M10
Panasonic G6
  • $494
  • 4/3
  • In-Camera Image Stabilization
  • Higher effective ISO
  • $500
  • 4/3
  • Tilt-swivel screen
  • Less expensive

Compared to Panasonic GX7

Sony A7R
Panasonic GX7
  • $1879
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $503
  • 4/3
  • Less expensive
  • Lens selection
Olympus E-M10
Panasonic GX7
  • $494
  • 4/3
  • Higher effective ISO
  • Bigger RAW buffer
  • $503
  • 4/3
  • Fast startup
  • In-camera panoramas
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