Olympus E-M5 vs Sony A7S

Sony A7S advantages over Olympus E-M5

• Focus peaking
  Peaker vs Non-peaker
  Your camera will highlight what's in focus
• Larger sensor
  35mm vs 4/3
  More sensor area. Bigger is (generally) better.
• Bigger pixels
  ~ 8.40 vs 3.75 microns
  Better low-light and dynamic range (all else equal)
• In-camera panoramas
  Yes vs No
  Stitches multiple shots into a panoramic photo
• Built-in Wi-Fi
  Wi-Fi vs None
  Share your photos wirelessly
• NFC
  Yes vs No
  Simplifies pairing your camera with supported phones
• 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.

  A7S test data on DxO Mark E-M5 test data on DxO Mark
  3,702 vs 826 iso
  Take photos in low light with less noise
• External Mic Jack
  Jack vs No jack
  Improved sound fidelity when shooting video
• Shoots 24p video
  Yes vs No
  Gives your movies a big-screen feel
• Higher-res screen
  307k vs 205k pixels
  More detail on the screen lets you judge focus and composition
• Shoots 1080p video
  Yes vs No
  You'll want this if you shoot video
• Less shutter lag
  0.18 vs 0.28 sec
  Focus and take a photo quickly (wide angle)
• More viewfinder magnification
  0.71x vs 0.58x
  Get a bigger view of the scene through the eye-level viewfinder
• Headphone jack
  Yes vs No
  Monitor audio recording while you shoot video
• Bigger JPEG buffer
  62 vs 17 shots
  Take more JPEG shots before waiting (burst mode)
• Bigger RAW buffer
  39 vs 16 shots
  Larger buffer for RAW shots (burst mode)
• Slow-motion videos
  Yes vs No
  Shoot slow-motion videos
• Faster shutter
  1/8000 vs 1/4000 sec
  Shoot wide open in bright light
• Higher extended ISO
  409600 vs 25600 ISO
  Higher extended ISO can give more low-light flexibility