Olympus E-M10 II vs Sony A9

Sony A9 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
• Higher effective ISO

  Higher effective ISO

  Maximum effective ISO is an estimate of the highest sensitivity at which a camera can capture excellent quality photos.

  Cameras with higher effective ISO will be better choices for indoor photography, night shooting, and indoor sports photography, especially if you intend to make large prints.

  You can learn more at our glossary entry.

  Maximum effective ISO test data courtesy of DxO Mark.

  A9 test data on DxO Mark E-M10 II test data on DxO Mark
  3,517 vs 842 iso
  Take photos in low light with less noise
• 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

  650 vs 320 shots
  Capture more photos
• External Mic Jack
  Jack vs No jack
  Improved sound fidelity when shooting video
• 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
  364 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
  240 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