Pentax K-x vs Sony A7S II

Sony A7S II advantages over Pentax K-x

• Focus peaking
  Peaker vs Non-peaker
  Your camera will highlight what's in focus
• Larger sensor
  35mm vs APS-C
  More sensor area. Bigger is (generally) better.
• Bigger pixels
  ~ 8.40 vs 5.53 microns
  Better low-light and dynamic range (all else equal)
• Shoot 4K video
  4K (UHD) vs 720p
  Make sure you have a fast computer
• In-camera panoramas
  Yes vs No
  Stitches multiple shots into a panoramic photo
• 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
• 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 II test data on DxO Mark K-x test data on DxO Mark
  2,993 vs 811 iso
  Take photos in low light with less noise
• External Mic Jack
  Jack vs No jack
  Improved sound fidelity when shooting video
• Newer
  9 years vs 15 years old
  Newer cameras often support more advanced features
• HDMI out
  HDMI out vs None
  Use HDMI output to monitor or review video
• More dots on screen
  1229k vs 230k dots
  Can mean greater resolution or a brighter screen
• Shoots 1080p video
  Yes vs No
  You'll want this if you shoot video
• More viewfinder magnification
  0.78x vs 0.57x
  Get a bigger view of the scene through the eye-level viewfinder
• Shoots 60p video
  Yes vs No
  A faster framerate can give you more editing options
• Headphone jack
  Yes vs No
  Monitor audio recording while you shoot video
• Faster JPEG shooting
  5.0 fps vs 4.3 fps
  Faster JPEG shooting (burst mode)
• Bigger JPEG buffer
  63 vs 25 shots
  Take more JPEG shots before waiting (burst mode)
• Slow-motion videos
  Yes vs No
  Shoot slow-motion videos
• Higher extended ISO
  409600 vs 12800 ISO
  Higher extended ISO can give more low-light flexibility