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

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Differences

Sony A77 advantages over Sony A6400

  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Fast startup
    ~0.80 vs 1.8 sec
    Faster startup lets you catch the moment
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Longer stills battery life
    More info 530 vs 410 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Higher max flash sync
    1/250 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Sony A6400 advantages over Sony A77

  • 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
  • Newer
    5 years vs 13 years old
    Newer cameras often support more advanced features
  • Lighter weight
    519g vs 1363g
    Lighter weight
  • Bigger JPEG buffer
    87 vs 17 shots
    Take more JPEG shots before waiting (burst mode)
  • Bigger RAW buffer
    42 vs 14 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    102400 vs 16000 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
  • 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

  • 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 Sony A77

Your purchases support this site

Buy the Sony A6400

Review Excerpt

  • Very fast top frame rate; full-time phase-detect autofocus; Full 60p HD video; Excellent kit lens; Very good high-resolution sensor.

  • Heavy; EVF appears dim when used in bright light; AF tracking in Movie mode was unreliable in our testing.

The Competition

Compared to Canon 7D

Sony A77
Canon 7D
  • $1899
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
  • $1499
  • APS-C
  • Lens selection
  • Fast startup
Sony A6400
Canon 7D
  • $898
  • APS-C
  • Less expensive
  • Focus peaking
  • $1499
  • APS-C
  • Lens selection
  • Fast startup

Compared to Canon 70D

Sony A77
Canon 70D
  • $1899
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $999
  • APS-C
  • Lens selection
  • Touchscreen
Sony A6400
Canon 70D
  • $898
  • APS-C
  • Focus peaking
  • Shoot 4K video
  • $999
  • APS-C
  • Lens selection
  • Tilt-swivel screen

Compared to Sony A77 II

Sony A77
Sony A77 II
  • $1899
  • APS-C
  • Built-in GPS
  • $1198
  • APS-C
  • Built-in Wi-Fi
  • NFC
Sony A6400
Sony A77 II
  • $898
  • APS-C
  • Less expensive
  • Shoot 4K video
  • $1198
  • APS-C
  • Tilt-swivel screen
  • In-Camera Image Stabilization

Compared to Fujifilm X-T100

Sony A77
Fujifilm X-T100
  • $1899
  • APS-C
  • In-Camera Image Stabilization
  • Fast startup
  • $599
  • APS-C
  • Shoot 4K video
  • Touchscreen
Sony A6400
Fujifilm X-T100
  • $898
  • APS-C
  • Slower slow-motion
  • Fast startup
  • $599
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Sony A6100

Sony A77
Sony A6100
  • $1899
  • APS-C
  • Tilt-swivel screen
  • In-Camera Image Stabilization
  • $748
  • APS-C
  • Shoot 4K video
  • Touchscreen
Sony A6400
Sony A6100
  • $898
  • APS-C
  • Higher extended ISO
  • $748
  • APS-C
  • Less expensive
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