• 35mm 860.4mm2
  • 16.2 megapixels
  • ISO 100 - 25,600
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600

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Differences

Nikon D4S advantages over Olympus E-M10 II

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 7.31 vs 3.75 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.20 vs 0.8 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    3,074 vs 842 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 3020 vs 320 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More viewfinder magnification
    0.70x vs 0.62x
    Get a bigger view of the scene through the eye-level viewfinder
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Faster JPEG shooting
    10.6 fps vs 8.9 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    200 vs 28 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    10.8 fps vs 8.9 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    78 vs 18 shots
    Larger buffer for RAW shots (burst mode)
  • Higher extended ISO
    409600 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-M10 II advantages over Nikon D4S

  • Less expensive
    $499 vs $5869*
    Save money for lenses or accessories
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    46 mm vs 90 mm
    Thinner
  • Newer
    3 years vs 5 years old
    Newer cameras often support more advanced features
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • 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

  • 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
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance

User reviews

Buy From

Your purchases support this site

Buy the Olympus E-M10 II

Review Excerpt

  • Excellent, tank-like build quality; First-rate ergonomics a pro would expect; Superb performance with confident autofocus; Great image quality; Big, bright viewfinder with 100% coverage; Excellent battery life; Doubles as a powerful video capture tool

  • Fairly minor upgrade over the D4; Image quality improvements apply only to JPEG; XQD card format isn't broadly accepted; Consumer-friendly default JPEG processing may turn off some pros; Body is large and hefty (but that's normal for pro gear)

  • Excellent value for the money; Professional-grade ergonomics; Incredibly good image quality for its class; Solid performance specs across the board; Loaded with features.

  • Kit lens may not be quite as sharp as previous kit lens from this line; Below average battery life; Somewhat confusing menu systems.

The Competition

Compared to Canon 1DX

Nikon D4S
Canon 1DX
  • $5869
  • 35mm
  • Fast startup
  • Higher effective ISO
  • $5499
  • 35mm
  • More cross-type AF points
  • Less shutter lag
Olympus E-M10 II
Canon 1DX
  • $442
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $5499
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Nikon D4

Nikon D4S
Nikon D4
  • $5869
  • 35mm
  • Fast startup
  • Newer
  • $5999
  • 35mm
  • Bigger JPEG buffer
  • Bigger RAW buffer
Olympus E-M10 II
Nikon D4
  • $442
  • 4/3
  • Less expensive
  • Focus peaking
  • $5999
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Canon EOS-1D C

Nikon D4S
Canon EOS-1D C
  • $5869
  • 35mm
  • Higher extended ISO
  • $6989
  • 35mm
  • Shoot 4K video
  • More cross-type AF points
Olympus E-M10 II
Canon EOS-1D C
  • $442
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $6989
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Olympus E-M10

Nikon D4S
Olympus E-M10
  • $5869
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $419
  • 4/3
  • Less expensive
  • Focus peaking
Olympus E-M10 II
Olympus E-M10
  • $442
  • 4/3
  • Fast startup
  • Newer
  • $419
  • 4/3
  • Less expensive

Compared to Panasonic GX85

Nikon D4S
Panasonic GX85
  • $5869
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $598
  • 4/3
  • Less expensive
  • Focus peaking
Olympus E-M10 II
Panasonic GX85
  • $442
  • 4/3
  • Less expensive
  • Higher effective ISO
  • $598
  • 4/3
  • Shoot 4K video
  • In-camera panoramas
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