Panasonic G9 vs Sony A1

Sony A1 advantages over Panasonic G9

• Larger sensor
  35mm vs 4/3
  More sensor area. Bigger is (generally) better.
• Slower slow-motion
  240 fps vs 180 fps
  Supports slower slow-mo
• Bigger pixels
  ~ 4.16 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
  150 vs 55 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

  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

  530 vs 400 shots
  Capture more photos
• Higher max flash sync
  1/400 vs 1/250 sec
  Reduce the effect of ambient light in flash shots
• Newer
  4 years vs 7 years old
  Newer cameras often support more advanced features
• More viewfinder magnification
  0.90x vs 0.83x
  Get a bigger view of the scene through the eye-level viewfinder
• More pixels
  50.1 vs 20.3 megapixels
  Higher resolution photos
• Bigger JPEG buffer
  165 vs 50 shots
  Take more JPEG shots before waiting (burst mode)
• Bigger RAW buffer
  155 vs 50 shots
  Larger buffer for RAW shots (burst mode)
• Higher extended ISO
  102400 vs 25600 ISO
  Higher extended ISO can give more low-light flexibility