• APS-C 369.7mm2
  • 16.1 megapixels
  • ISO 100 - 16,000
  • APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 32,000

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Differences

Sony A57 advantages over Sony A6400

  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 4.82 vs 3.92 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 550 vs 410 shots
    Capture more photos

Sony A6400 advantages over Sony A57

  • 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
  • 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 80 mm
    Thinner
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Newer
    3 months vs 7 years old
    Newer cameras often support more advanced features
  • Lighter weight
    519g vs 828g
    Lighter weight
  • More pixels
    24.2 vs 16.1 megapixels
    Higher resolution photos
  • 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 10.0 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    87 vs 25 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    102400 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • In-camera panoramas
    Both provide
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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

  • 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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Buy the Sony A6400

Review Excerpt

The Competition

Compared to Nikon D5100

Sony A57
Nikon D5100
  • $800
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $499
  • APS-C
  • Lens selection
  • Tilt-swivel screen
Sony A6400
Nikon D5100
  • $898
  • APS-C
  • Focus peaking
  • Shoot 4K video
  • $499
  • APS-C
  • Lens selection
  • Less expensive

Compared to Sony A37

Sony A57
Sony A37
  • $800
  • APS-C
  • Longer stills battery life
  • Higher-res screen
  • $600
  • APS-C
  • Less expensive
  • External Mic Jack
Sony A6400
Sony A37
  • $898
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $600
  • APS-C
  • In-Camera Image Stabilization
  • Bigger pixels

Compared to Pentax K-5 IIs

Sony A57
Pentax K-5 IIs
  • $800
  • APS-C
  • Focus peaking
  • In-camera panoramas
  • $623
  • APS-C
  • Lens selection
  • Higher effective ISO
Sony A6400
Pentax K-5 IIs
  • $898
  • APS-C
  • Focus peaking
  • Shoot 4K video
  • $623
  • APS-C
  • Lens selection
  • Less expensive

Compared to Canon EOS M50

Sony A57
Canon EOS M50
  • $800
  • APS-C
  • Lens selection
  • Larger sensor
  • $579
  • APS-C
  • Tilt-swivel screen
  • Shoot 4K video
Sony A6400
Canon EOS M50
  • $898
  • APS-C
  • Lens selection
  • Larger sensor
  • $579
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Fujifilm X-T30

Sony A57
Fujifilm X-T30
  • $800
  • APS-C
  • In-Camera Image Stabilization
  • Bigger pixels
  • $899
  • APS-C
  • Shoot 4K video
  • Touchscreen
Sony A6400
Fujifilm X-T30
  • $898
  • APS-C
  • NFC
  • Longer video battery life
  • $899
  • APS-C
  • Doesn't require an AA filter
  • Longer exposure
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