Olympus E-M10 II vs Sony A9 II

Sony A9 II advantages over Olympus E-M10 II

• Larger sensor
  35mm vs 4/3
  More sensor area. Bigger is (generally) better.
• Bigger pixels
  ~ 5.93 vs 3.75 microns
  Better low-light and dynamic range (all else equal)
• Shoot 4K video
  4K (UHD) vs 1080p
  Make sure you have a fast computer
• 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 320 shots
  Capture more photos
• External Mic Jack
  Jack vs No jack
  Improved sound fidelity when shooting video
• Newer
  5 years vs 9 years old
  Newer cameras often support more advanced features
• More viewfinder magnification
  0.78x vs 0.62x
  Get a bigger view of the scene through the eye-level viewfinder
• More pixels
  24.2 vs 16.1 megapixels
  Higher resolution photos
• Dual card slots
  Yes vs No
  Gives you more storage flexibility
• Headphone jack
  Yes vs No
  Monitor audio recording while you shoot video
• Has anti-aliasing filter
  Filter vs No Filter
  Reduces unsightly moiré in photos
• Faster JPEG shooting
  20.0 fps vs 8.9 fps
  Faster JPEG shooting (burst mode)
• Bigger JPEG buffer
  361 vs 28 shots
  Take more JPEG shots before waiting (burst mode)
• Faster RAW shooting
  20.0 fps vs 8.9 fps
  Faster RAW shooting in burst mode
• Bigger RAW buffer
  239 vs 18 shots
  Larger buffer for RAW shots (burst mode)
• Faster shutter
  1/32000 vs 1/16000 sec
  Shoot wide open in bright light
• Higher extended ISO
  204800 vs 25600 ISO
  Higher extended ISO can give more low-light flexibility