Pentax K-3 vs Sony A9 II

Sony A9 II advantages over Pentax K-3

• Larger sensor
  35mm vs APS-C
  More sensor area. Bigger is (generally) better.
• Bigger pixels
  ~ 5.93 vs 3.91 microns
  Better low-light and dynamic range (all else equal)
• 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
• Tiltable Screen
  Tiltable vs Fixed
  Tilt the screen for shooting flexbility
• 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
• 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

  690 vs 560 shots
  Capture more photos
• Newer
  5 years vs 11 years old
  Newer cameras often support more advanced features
• More viewfinder magnification
  0.78x vs 0.63x
  Get a bigger view of the scene through the eye-level viewfinder
• Faster JPEG shooting
  20.0 fps vs 7.1 fps
  Faster JPEG shooting (burst mode)
• Bigger JPEG buffer
  361 vs 75 shots
  Take more JPEG shots before waiting (burst mode)
• Faster RAW shooting
  20.0 fps vs 7.1 fps
  Faster RAW shooting in burst mode
• Bigger RAW buffer
  239 vs 24 shots
  Larger buffer for RAW shots (burst mode)
• Slow-motion videos
  Yes vs No
  Shoot slow-motion videos
• Faster shutter
  1/32000 vs 1/8000 sec
  Shoot wide open in bright light
• Higher extended ISO
  204800 vs 51200 ISO
  Higher extended ISO can give more low-light flexibility