Pentax 645D vs Nikon D810

Nikon D810 advantages over Pentax 645D

• Lens selection
  Excellent vs Limited
  Better lens selection gives you more options
• Fast startup
  ~0.50 vs 0.7 sec
  Faster startup lets you catch the moment
• 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.

  D810 test data on DxO Mark 645D test data on DxO Mark
  2,853 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.

  D810 test data on DxO Mark 645D test data on DxO Mark
  14.8 vs 12.6 evs
  Retain detail in highlight and shadows
• 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

  1200 vs 800 shots
  Capture more photos
• Internal flash
  Internal flash vs None
  Useful in a pinch for fill flash
• Thinner
  81 mm vs 119 mm
  Thinner
• External Mic Jack
  Jack vs No jack
  Improved sound fidelity when shooting video
• More cross-type AF points
  15 vs 11
  Cross-type AF points improve autofocus performance
• Higher max flash sync
  1/250 vs 1/125 sec
  Reduce the effect of ambient light in flash shots
• Shoots 24p video
  Yes vs No
  Gives your movies a big-screen feel
• Lighter weight
  988g 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
• More AF points
  51 vs 11
  More AF points improve autofocus
• Headphone jack
  Yes vs No
  Monitor audio recording while you shoot video
• Faster JPEG shooting
  5.1 fps vs 1.1 fps
  Faster JPEG shooting (burst mode)
• Bigger JPEG buffer
  57 vs 19 shots
  Take more JPEG shots before waiting (burst mode)
• Faster RAW shooting
  5.1 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)
• Faster shutter
  1/8000 vs 1/4000 sec
  Shoot wide open in bright light
• Higher extended ISO
  51200 vs 1600 ISO
  Higher extended ISO can give more low-light flexibility