Pentax 645D vs Sony A7R II

Sony A7R II advantages over Pentax 645D

• Lens selection
  Good vs Limited
  Better lens selection gives you more options
• Focus peaking
  Peaker vs Non-peaker
  Your camera will highlight what's in focus
• In-Camera Image Stabilization
  Yes vs No
  Reduces the effects of camera shake at slower shutter speeds
• Shoot 4K video
  4K (UHD) vs No
  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.

  A7R II test data on DxO Mark 645D test data on DxO Mark
  3,434 vs 1,262 iso
  Take photos in low light with less noise
• More dynamic range

  More dynamic range

  Cameras with more dynamic range allow you to take photos with dramatic differences in highlight and shadow areas while retaining detail in both.

  Think of a brilliant sunset on a rocky beach: Bright sunset in the background, with dark rocks in the foreground. High dynamic range means more of the extremes will be faithfully reproduced.

  Dynamic range test data courtesy of DxO Mark.

  A7R II test data on DxO Mark 645D test data on DxO Mark
  13.9 vs 12.6 evs
  Retain detail in highlight and shadows
• On-sensor phase detect
  Yes vs No
  Usually improves live view and video AF performance
• Thinner
  60 mm vs 119 mm
  Thinner
• External Mic Jack
  Jack vs No jack
  Improved sound fidelity when shooting video
• Higher max flash sync
  1/250 vs 1/125 sec
  Reduce the effect of ambient light in flash shots
• Newer
  9 years vs 14 years old
  Newer cameras often support more advanced features
• Shoots 24p video
  Yes vs No
  Gives your movies a big-screen feel
• Lighter weight
  640g vs 1480g
  Lighter weight
• Shoots 1080p video
  Yes vs No
  You'll want this if you shoot video
• 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 1.1 fps
  Faster JPEG shooting (burst mode)
• Faster RAW shooting
  5.0 fps vs 1.1 fps
  Faster RAW shooting in burst mode
• Bigger RAW buffer
  23 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
  102400 vs 1600 ISO
  Higher extended ISO can give more low-light flexibility