• APS-C 368.2mm2
  • 16.2 megapixels
  • ISO 100 - 6400
  • APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 32,000

Buy From

Differences

Nikon D5100 advantages over Sony A6100

  • 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
  • Bigger pixels
    ~ 4.79 vs 3.92 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 660 vs 420 shots
    Capture more photos

Sony A6100 advantages over Nikon D5100

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Shoot 4K video
    4K (UHD) vs 1080p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • 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
    59 mm vs 79 mm
    Thinner
  • Newer
    2 years vs 11 years old
    Newer cameras often support more advanced features
  • Lighter weight
    512g vs 829g
    Lighter weight
  • More viewfinder magnification
    0.70x vs 0.52x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    24.2 vs 16.2 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Wider angle kit lens
    24 mm vs 27 mm
    Capture more of the scene with the included lens
  • Faster JPEG shooting
    11.0 fps vs 3.9 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    11.0 fps vs 4.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    33 vs 13 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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 Image Stabilization
    Neither provide
    Reduces the effects of camera shake at slower shutter speeds
  • 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

Buy From

Your purchases support this site

Buy the Nikon D5100

Your purchases support this site

Buy the Sony A6100

Review Excerpt

  • Side-mounted tilt / swivel LCD screen; same sensor and processing as the Nikon D7000; good speed and battery life; in-camera HDR and filter effects; Full HD video capture with aperture control; audio levels control and external microphone jack.

  • AF-S lens mount doesn't offer autofocus with screw-drive lenses; popup flash isn't the greatest; no built-in wireless flash control; HDR function doesn't microalign source images.

The Competition

Compared to Sony A55

Nikon D5100
Sony A55
  • $599
  • APS-C
  • Lens selection
  • Tilt-swivel screen
  • $734
  • APS-C
  • In-Camera Image Stabilization
  • In-camera panoramas
Sony A6100
Sony A55
  • $748
  • APS-C
  • Focus peaking
  • Shoot 4K video
  • $734
  • APS-C
  • In-Camera Image Stabilization
  • Bigger pixels

Compared to Sony A33

Nikon D5100
Sony A33
  • $599
  • APS-C
  • Lens selection
  • Tilt-swivel screen
  • $540
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
Sony A6100
Sony A33
  • $748
  • APS-C
  • Focus peaking
  • Shoot 4K video
  • $540
  • APS-C
  • In-Camera Image Stabilization
  • Bigger pixels

Compared to Sony A57

Nikon D5100
Sony A57
  • $599
  • APS-C
  • Lens selection
  • Tilt-swivel screen
  • $800
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
Sony A6100
Sony A57
  • $748
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $800
  • APS-C
  • In-Camera Image Stabilization
  • Bigger pixels

Compared to Fujifilm X-T100

Nikon D5100
Fujifilm X-T100
  • $599
  • APS-C
  • Lens selection
  • Bigger pixels
  • $499
  • APS-C
  • Focus peaking
  • Shoot 4K video
Sony A6100
Fujifilm X-T100
  • $748
  • APS-C
  • Slower slow-motion
  • NFC
  • $499
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Sony A6400

Nikon D5100
Sony A6400
  • $599
  • APS-C
  • Lens selection
  • Tilt-swivel screen
  • $898
  • APS-C
  • Focus peaking
  • Shoot 4K video
Sony A6100
Sony A6400
  • $748
  • APS-C
  • Less expensive
  • $898
  • APS-C
  • Higher extended ISO
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