• 1/3 inch 17.3mm2
  • 10.1 megapixels
  • 29.00mm - 87.00mm (35mm eq.)
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 25,600

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Differences

Nikon S31 advantages over Olympus E-M1 II

  • Waterproof
    Yes vs No
    Take photos underwater without destroying your camera!
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    41 mm vs 68 mm
    Thinner
  • Lighter weight
    185g vs 574g
    Lighter weight

Olympus E-M1 II advantages over Nikon S31

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    4/3 vs 1/3 inch
    More sensor area. Bigger is (generally) better.
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 3.36 vs 1.32 microns
    Better low-light and dynamic range (all else equal)
  • Shoot 4K video
    4K (DCI) vs 720p
    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
  • RAW file ability
    Yes vs No
    Gives you more flexibility to develop your photos later
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 440 vs 260 shots
    Capture more photos
  • Manual focus
    Yes vs No
    AF is for the weak. Real photographers focus manually.
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Newer
    7 years vs 11 years old
    Newer cameras often support more advanced features
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More dots on screen
    1037k vs 230k dots
    Can mean greater resolution or a brighter screen
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    20.4 vs 10.1 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
  • Longer exposure
    60 vs 4 sec
    Long exposures for night shots
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster JPEG shooting
    60.6 fps vs 1.5 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    51 vs 4 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/32000 vs 1/2000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    25600 vs 1600 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera

Common Weaknesses

  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Review Excerpt

  • 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 Fujifilm X-T2

Nikon S31
Fujifilm X-T2
  • $89
  • 1/3 inch
  • Waterproof
  • Internal flash
  • $999
  • APS-C
  • Focus peaking
  • Larger sensor
Olympus E-M1 II
Fujifilm X-T2
  • $949
  • 4/3
  • Lens selection
  • Less expensive
  • $999
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Nikon S30

Nikon S31
Nikon S30
  • $89
  • 1/3 inch
  • Faster shutter
  • $120
  • 1/3 inch
  • Longer stills battery life
Olympus E-M1 II
Nikon S30
  • $949
  • 4/3
  • Focus peaking
  • Larger sensor
  • $120
  • 1/3 inch
  • Waterproof
  • Internal flash

Compared to Nikon S33

Nikon S31
Nikon S33
  • $89
  • 1/3 inch
  • Bigger pixels
  • $107
  • 1/3.1 inch
  • HDMI out
  • Shoots 1080p video
Olympus E-M1 II
Nikon S33
  • $949
  • 4/3
  • Focus peaking
  • Larger sensor
  • $107
  • 1/3.1 inch
  • Less expensive
  • Waterproof

Compared to Panasonic G7

Nikon S31
Panasonic G7
  • $89
  • 1/3 inch
  • Waterproof
  • Thinner
  • $498
  • 4/3
  • Tilt-swivel screen
  • Focus peaking
Olympus E-M1 II
Panasonic G7
  • $949
  • 4/3
  • In-Camera Image Stabilization
  • High resolution composite
  • $498
  • 4/3
  • Less expensive
  • In-camera panoramas

Compared to Panasonic GX8

Nikon S31
Panasonic GX8
  • $89
  • 1/3 inch
  • Waterproof
  • Internal flash
  • $998
  • 4/3
  • Tilt-swivel screen
  • Focus peaking
Olympus E-M1 II
Panasonic GX8
  • $949
  • 4/3
  • High resolution composite
  • Fast startup
  • $998
  • 4/3
  • In-camera panoramas
  • NFC
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