• 35mm 860.4mm2
  • 16.2 megapixels
  • ISO 100 - 25,600
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 6400

Buy From

Differences

Nikon D4S advantages over Olympus E-M5 III

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 7.31 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 3020 vs 310 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • 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
  • Bigger JPEG buffer
    200 vs 26 shots
    Take more JPEG shots before waiting (burst mode)
  • Bigger RAW buffer
    78 vs 23 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-M5 III advantages over Nikon D4S

  • Less expensive
    $1099 vs $4800*
    Save money for lenses or accessories
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • 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
  • 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
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Thinner
    49 mm vs 90 mm
    Thinner
  • Newer
    5 years vs 11 years old
    Newer cameras often support more advanced features
  • Lighter weight
    414g vs 1356g
    Lighter weight
  • More pixels
    20.4 vs 16.2 megapixels
    Higher resolution photos
  • 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
    30.0 fps vs 10.6 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    30.0 fps vs 10.8 fps
    Faster RAW shooting in burst mode
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/32000 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
  • 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
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash

User reviews

Buy From

Your purchases support this site

Buy the Nikon D4S
Body Only
All D4S Deals

Your purchases support this site

Buy the Olympus E-M5 III
Body Only (Black)
  • Body Only (Black)
  • Body Only (Silver)
  • Kit with 14-150mm Lens (Black)
  • Kit with 14-150mm Lens (Silver)
All E-M5 III Deals

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)

  • Read our Nikon D4S Review

  • Improved image quality; Very good dynamic range & high ISO performance for a modern MFT sensor; Very fast AF; Excellent image stabilization; 4K video recording; Weather-sealed build quality.

  • Below average battery life; Small size can be awkward with long, heavy lenses; One SD card slot.

  • Read our Olympus E-M5 III Review

The Competition

Compared to Canon 1DX

Nikon D4S
Canon 1DX
  • $5399
  • 35mm
  • Fast startup
  • Higher effective ISO
  • $5299
  • 35mm
  • More cross-type AF points
  • Less shutter lag

Compare Nikon D4S vs Canon 1DX

Olympus E-M5 III
Canon 1DX
  • $924
  • 4/3
  • Focus peaking
  • Tilt-swivel screen
  • $5299
  • 35mm
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M5 III vs Canon 1DX

Compared to Nikon D4

Nikon D4S
Nikon D4
  • $5399
  • 35mm
  • Fast startup
  • Higher extended ISO
  • $4500
  • 35mm
  • Bigger JPEG buffer
  • Bigger RAW buffer

Compare Nikon D4S vs Nikon D4

Olympus E-M5 III
Nikon D4
  • $924
  • 4/3
  • Less expensive
  • Tilt-swivel screen
  • $4500
  • 35mm
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M5 III vs Nikon D4

Compared to Canon EOS-1D C

Nikon D4S
Canon EOS-1D C
  • $5399
  • 35mm
  • Higher extended ISO
  • $6989
  • 35mm
  • Shoot 4K video
  • More cross-type AF points

Compare Nikon D4S vs Canon EOS-1D C

Olympus E-M5 III
Canon EOS-1D C
  • $924
  • 4/3
  • Tilt-swivel screen
  • Focus peaking
  • $6989
  • 35mm
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M5 III vs Canon EOS-1D C

Compared to Panasonic G100

Nikon D4S
Panasonic G100
  • $5399
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $599
  • 4/3
  • Focus peaking
  • Less expensive

Compare Nikon D4S vs Panasonic G100

Olympus E-M5 III
Panasonic G100
  • $924
  • 4/3
  • In-Camera Image Stabilization
  • High resolution composite
  • $599
  • 4/3
  • Less expensive
  • In-camera panoramas

Compare Olympus E-M5 III vs Panasonic G100

Compared to Olympus E-M10 IV

Nikon D4S
Olympus E-M10 IV
  • $5399
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $666
  • 4/3
  • Focus peaking
  • Less expensive

Compare Nikon D4S vs Olympus E-M10 IV

Olympus E-M5 III
Olympus E-M10 IV
  • $924
  • 4/3
  • Tilt-swivel screen
  • High resolution composite
  • $666
  • 4/3
  • Less expensive
  • Longer video battery life

Compare Olympus E-M5 III vs Olympus E-M10 IV

Compare Other Cameras?