• 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600
  • 1 inch 116.2mm2
  • 18.4 megapixels
  • ISO 160 - 12,800

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Differences

Olympus E-M1 advantages over Nikon J4

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    4/3 vs 1 inch
    More sensor area. Bigger is (generally) better.
  • 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
    ~ 3.75 vs 2.52 microns
    Better low-light and dynamic range (all else equal)
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Better color depth
    23.0 vs 20.8 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    757 vs 426 iso
    Take photos in low light with less noise
  • More dynamic range
    12.7 vs 10.7 evs
    Retain detail in highlight and shadows
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Higher max flash sync
    1/320 vs 1/60 sec
    Reduce the effect of ambient light in flash shots
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Higher extended ISO
    25600 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

Nikon J4 advantages over Olympus E-M1

  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    28 mm vs 63 mm
    Thinner
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Faster JPEG shooting
    60.0 fps vs 9.9 fps
    Faster JPEG shooting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Similarities

Common Strengths

  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • On-sensor phase detect
    Both provide
    Usually improves live view and video AF performance
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • 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
  • 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
  • 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
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

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Your purchases support this site

Buy the Olympus E-M1

Review Excerpt

  • Exceptional rugged, weather-proof, professional build; Lightning fast contrast-detect AF, and phase-detect AF that makes Four Thirds lenses far more responsive; Tons of useful physical controls with immense customizability; Arguably the best image quality of any Micro Four Thirds camera we've tested to date; Large, sharp, high-resolution electronic viewfinder; Advanced Wi-Fi capabilities, including remote control shooting in PASM exposure modes.

  • Bigger and heavier than many other compact system cameras; Most expensive Micro Four Thirds camera on the market to date; Menu system and customization options have a steep learning curve; No optical low-pass filter means greater risk of moire; No built-in flash.

  • We haven’t finished our review of the Nikon J4, but we have extensive sample photos and a hands-on report.

The Competition

Compared to Olympus E-M5

Olympus E-M1
Olympus E-M5
  • $1099
  • 4/3
  • Focus peaking
  • Fast startup
  • $900
  • 4/3
  • Thinner
  • Shoots 60p video
Nikon J4
Olympus E-M5
  • $350
  • 1 inch
  • Less expensive
  • In-camera panoramas
  • $900
  • 4/3
  • Lens selection
  • Larger sensor

Compared to Panasonic GH3

Olympus E-M1
Panasonic GH3
  • $1099
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $798
  • 4/3
  • Tilt-swivel screen
  • Longer stills battery life
Nikon J4
Panasonic GH3
  • $350
  • 1 inch
  • Less expensive
  • In-camera panoramas
  • $798
  • 4/3
  • Lens selection
  • Larger sensor

Compared to Panasonic GH4

Olympus E-M1
Panasonic GH4
  • $1099
  • 4/3
  • In-Camera Image Stabilization
  • On-sensor phase detect
  • $899
  • 4/3
  • Less expensive
  • Tilt-swivel screen
Nikon J4
Panasonic GH4
  • $350
  • 1 inch
  • Slower slow-motion
  • In-camera panoramas
  • $899
  • 4/3
  • Lens selection
  • Focus peaking

Compared to Samsung NX Mini

Olympus E-M1
Samsung NX Mini
  • $1099
  • 4/3
  • Focus peaking
  • Larger sensor
  • $600
  • 1 inch
  • In-camera panoramas
  • NFC
Nikon J4
Samsung NX Mini
  • $350
  • 1 inch
  • On-sensor phase detect
  • Higher-res screen
  • $600
  • 1 inch
  • Less expensive
  • Tiltable Screen

Compared to Nikon J5

Olympus E-M1
Nikon J5
  • $1099
  • 4/3
  • Lens selection
  • Focus peaking
  • $497
  • 1 inch
  • Less expensive
  • Shoot 4K video
Nikon J4
Nikon J5
  • $350
  • 1 inch
  • Longer stills battery life
  • $497
  • 1 inch
  • Shoot 4K video
  • Tiltable Screen
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