• 4/3 224.9mm2
  • 20.3 megapixels
  • ISO 200 - 25,600
  • APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 32,000

Buy From

Differences

Panasonic GX9 advantages over Sony A6400

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Less expensive
    $798 vs $998
    Save money for lenses or accessories
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • More telephoto lens reach
    120 mm vs 75 mm
    Capture objects farther away with the kit lens
  • Higher-res screen
    413k vs 307k pixels
    More detail on the screen lets you judge focus and composition
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster shutter
    1/16000 vs 1/4000 sec
    Shoot wide open in bright light

Sony A6400 advantages over Panasonic GX9

  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 3.92 vs 3.34 microns
    Better low-light and dynamic range (all else equal)
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Longer video battery life
    125 vs 70 minutes
    Capture more video
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 410 vs 260 shots
    Capture more photos
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More pixels
    24.2 vs 20.3 megapixels
    Higher resolution photos
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Faster JPEG shooting
    11.0 fps vs 9.2 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    11.0 fps vs 9.1 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    46 vs 32 shots
    Larger buffer for RAW shots (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
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • 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
  • Built-in Bluetooth
    Both provide
    Always-on wireless connectivity
  • 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

  • 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
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

Buy From

Your purchases support this site

Buy the Panasonic GX9

Your purchases support this site

Buy the Sony A6400

Review Excerpt

  • Great image quality; Good high ISO performance for its class; Improved JPEG processing; Fast autofocus; Fast ~9fps burst mode.

  • Smallish field-sequential EVF; Below average battery life; No mic/headphone jacks; Noticeable crop on 4K video.

The Competition

Compared to Panasonic GX85

Panasonic GX9
Panasonic GX85
  • $798
  • 4/3
  • Built-in Bluetooth
  • More telephoto lens reach
  • $498
  • 4/3
  • Less expensive
  • Lighter weight
Sony A6400
Panasonic GX85
  • $898
  • APS-C
  • Larger sensor
  • NFC
  • $498
  • 4/3
  • Lens selection
  • Less expensive

Compared to Olympus E-M10 III

Panasonic GX9
Olympus E-M10 III
  • $798
  • 4/3
  • In-camera panoramas
  • Built-in Bluetooth
  • $549
  • 4/3
  • Less expensive
  • Longer stills battery life
Sony A6400
Olympus E-M10 III
  • $898
  • APS-C
  • Larger sensor
  • In-camera panoramas
  • $549
  • 4/3
  • Lens selection
  • Less expensive

Compared to Olympus E-PL9

Panasonic GX9
Olympus E-PL9
  • $798
  • 4/3
  • Eye-level viewfinder
  • More telephoto lens reach
  • $599
  • 4/3
  • Longer stills battery life
  • Lighter weight
Sony A6400
Olympus E-PL9
  • $898
  • APS-C
  • Larger sensor
  • Eye-level viewfinder
  • $599
  • 4/3
  • Lens selection
  • Less expensive

Compared to Canon EOS M50

Panasonic GX9
Canon EOS M50
  • $798
  • 4/3
  • Lens selection
  • In-Camera Image Stabilization
  • $629
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Sony A6400
Canon EOS M50
  • $898
  • APS-C
  • Lens selection
  • Larger sensor
  • $629
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Fujifilm X-T100

Panasonic GX9
Fujifilm X-T100
  • $798
  • 4/3
  • Lens selection
  • In-Camera Image Stabilization
  • $499
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Sony A6400
Fujifilm X-T100
  • $898
  • APS-C
  • Slower slow-motion
  • NFC
  • $499
  • APS-C
  • Less expensive
  • Tilt-swivel screen
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