• 35mm 855.6mm2
  • 24.3 megapixels
  • ISO 100 - 25,600
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 25,600

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Differences

Sony A7 advantages over Olympus E-M1 II

  • Less expensive
    $998 vs $1599*
    Save money for lenses or accessories
  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.97 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Higher effective ISO
    2,248 vs 1,312 iso
    Take photos in low light with less noise
  • More dynamic range
    14.2 vs 12.8 evs
    Retain detail in highlight and shadows
  • Thinner
    48 mm vs 68 mm
    Thinner
  • More pixels
    24.3 vs 20.4 megapixels
    Higher resolution photos
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-M1 II advantages over Sony A7

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • 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
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Fast startup
    ~0.80 vs 2.1 sec
    Faster startup lets you catch the moment
  • Longer stills battery life
    More info 440 vs 340 shots
    Capture more photos
  • Newer
    2 years vs 5 years old
    Newer cameras often support more advanced features
  • Less shutter lag
    0.11 vs 0.23 sec
    Focus and take a photo quickly (wide angle)
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    60.6 fps vs 5.0 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    60.6 fps vs 5.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    51 vs 28 shots
    Larger buffer for RAW shots (burst mode)
  • Faster shutter
    1/32000 vs 1/8000 sec
    Shoot wide open in bright light

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
  • 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
  • Headphone jack
    Both provide
    Monitor audio recording while you shoot video
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • 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; Very high resolution; Hybrid autofocus is reasonably fast and confident; Significantly better burst-shooting performance than A7R; Excellent image quality even at very high sensitivities; Faster x-sync than A7R; Accepts existing Alpha-mount and E-mount lenses, and can optionally crop to APS-C image circle.

  • Grass-is-greener syndrome when compared to its higher-res sibling; Moderate performance; Loud shutter (but electronic first-curtain helps); Mediocre battery life when using electronic viewfinder; Weak low-light autofocus considering its price; Limited selection of native Sony FE lenses.

  • Excellent image quality; Very good dynamic range & high ISO performance; Fantastic C-AF performance; Incredible burst rates, even with RAW; 4K UHD & Cinema 4K (DCI) video; Clean HDMI; Dual SD card slots.

  • 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.

The Competition

Compared to Sony A7R

Sony A7
Sony A7R
  • $798
  • 35mm
  • Less expensive
  • Bigger pixels
  • $1898
  • 35mm
  • Higher effective ISO
  • More pixels
Olympus E-M1 II
Sony A7R
  • $1599
  • 4/3
  • Lens selection
  • Less expensive
  • $1898
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Fujifilm X-T2

Sony A7
Fujifilm X-T2
  • $798
  • 35mm
  • Less expensive
  • Larger sensor
  • $1099
  • APS-C
  • Shoot 4K video
  • Fast startup
Olympus E-M1 II
Fujifilm X-T2
  • $1599
  • 4/3
  • Lens selection
  • Tilt-swivel screen
  • $1099
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Sony A7 II

Sony A7
Sony A7 II
  • $798
  • 35mm
  • $898
  • 35mm
  • In-Camera Image Stabilization
Olympus E-M1 II
Sony A7 II
  • $1599
  • 4/3
  • Lens selection
  • Tilt-swivel screen
  • $898
  • 35mm
  • Less expensive
  • Larger sensor

Compared to Sony A7R II

Sony A7
Sony A7R II
  • $798
  • 35mm
  • Less expensive
  • Bigger pixels
  • $1598
  • 35mm
  • In-Camera Image Stabilization
  • Shoot 4K video
Olympus E-M1 II
Sony A7R II
  • $1599
  • 4/3
  • Tilt-swivel screen
  • Lens selection
  • $1598
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Panasonic GX8

Sony A7
Panasonic GX8
  • $798
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $998
  • 4/3
  • Tilt-swivel screen
  • Lens selection
Olympus E-M1 II
Panasonic GX8
  • $1599
  • 4/3
  • High resolution composite
  • Fast startup
  • $998
  • 4/3
  • Less expensive
  • In-camera panoramas
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