• 35mm 855.6mm2
  • 24.3 megapixels
  • ISO 100 - 25,600
  • APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 32,000

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Differences

Sony A7 II advantages over Sony A6400

  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 5.97 vs 3.92 microns
    Better low-light and dynamic range (all else equal)
  • Higher max flash sync
    1/250 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Sony A6400 advantages over Sony A7 II

  • Less expensive
    $848 vs $998
    Save money for lenses or accessories
  • 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 Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Newer
    5 years vs 9 years old
    Newer cameras often support more advanced features
  • Lighter weight
    519g vs 930g
    Lighter weight
  • Less shutter lag
    0.12 vs 0.22 sec
    Focus and take a photo quickly (wide angle)
  • Wider angle kit lens
    24 mm vs 28 mm
    Capture more of the scene with the included lens
  • Faster JPEG shooting
    11.0 fps vs 5.0 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    87 vs 52 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    11.1 fps vs 5.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    42 vs 28 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    102400 vs 51200 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
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • NFC
    Both provide
    Simplifies pairing your camera with supported phones
  • On-sensor phase detect
    Both provide
    Usually improves live view and video AF performance
  • 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

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • 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

User reviews

Buy From

Your purchases support this site

Buy the Sony A6400

Review Excerpt

  • Excellent 5-axis sensor-shift image stabilization; Sensor-shift IS brings stabilization to nearly any lens; Much-improved ergonomics and top-deck control layout; 'Mark II' maintains same impressive image quality, dynamic range and high ISO performance; XAVC S 50Mbps video format; Faster start-up time; Hybrid AF performs well with good continuous AF.

  • (Similar to A7): Loud shutter (but electronic first-curtain helps); Battery life could be better; Low-light AF still not as good as most DSLRs; High ISO JPEGs look over-processed; Slow buffer clearing; Limited selection of native Sony FE lenses (but it's getting better).

The Competition

Compared to Sony A7

Sony A7 II
Sony A7
  • $1175
  • 35mm
  • In-Camera Image Stabilization
  • $819
  • 35mm
  • Less expensive
Sony A6400
Sony A7
  • $798
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $819
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Leica SL (Typ 601)

Sony A7 II
Leica SL (Typ 601)
  • $1175
  • 35mm
  • Less expensive
  • In-Camera Image Stabilization
  • $3802
  • 35mm
  • Shoot 4K video
  • Touchscreen
Sony A6400
Leica SL (Typ 601)
  • $798
  • APS-C
  • Less expensive
  • In-camera panoramas
  • $3802
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Sony A7 III

Sony A7 II
Sony A7 III
  • $1175
  • 35mm
  • Less expensive
  • In-camera panoramas
  • $1865
  • 35mm
  • Shoot 4K video
  • Touchscreen
Sony A6400
Sony A7 III
  • $798
  • APS-C
  • Less expensive
  • In-camera panoramas
  • $1865
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization

Compared to Fujifilm X-T100

Sony A7 II
Fujifilm X-T100
  • $1175
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization
  • $599
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Sony A6400
Fujifilm X-T100
  • $798
  • APS-C
  • Slower slow-motion
  • Fast startup
  • $599
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Sony A6100

Sony A7 II
Sony A6100
  • $1175
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization
  • $648
  • APS-C
  • Less expensive
  • Shoot 4K video
Sony A6400
Sony A6100
  • $798
  • APS-C
  • Higher extended ISO
  • $648
  • APS-C
  • Less expensive
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