Sony A9 vs Sony A6400

Sony A9 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
  ~ 5.93 vs 3.92 microns
  Better low-light and dynamic range (all else equal)
• Fast startup
  ~1.20 vs 1.8 sec
  Faster startup lets you catch the moment
• Longer stills battery life
  More info

  Longer stills battery life

  Cameras with longer battery life can take more photos before exhausting their batteries.

  Special note: The measurement standard for battery life stipulates that if a camera has an internal flash, it must be used for 50% of photos taken. For this reason, comparisons of one camera with an internal flash to another without will not be comparable

  650 vs 410 shots
  Capture more photos
• Higher max flash sync
  1/250 vs 1/160 sec
  Reduce the effect of ambient light in flash shots
• More viewfinder magnification
  0.78x vs 0.70x
  Get a bigger view of the scene through the eye-level viewfinder
• Dual card slots
  Yes vs No
  Gives you more storage flexibility
• Headphone jack
  Yes vs No
  Monitor audio recording while you shoot video
• Faster JPEG shooting
  20.0 fps vs 11.0 fps
  Faster JPEG shooting (burst mode)
• Bigger JPEG buffer
  364 vs 87 shots
  Take more JPEG shots before waiting (burst mode)
• Faster RAW shooting
  20.0 fps vs 11.1 fps
  Faster RAW shooting in burst mode
• Bigger RAW buffer
  240 vs 42 shots
  Larger buffer for RAW shots (burst mode)
• Faster shutter
  1/32000 vs 1/4000 sec
  Shoot wide open in bright light
• Higher extended ISO
  204800 vs 102400 ISO
  Higher extended ISO can give more low-light flexibility