Nikon D800 vs Pentax K-3

Nikon D800 advantages over Pentax K-3

• Larger sensor
  35mm vs APS-C
  More sensor area. Bigger is (generally) better.
• Bigger pixels
  ~ 4.88 vs 3.91 microns
  Better low-light and dynamic range (all else equal)
• Fast startup
  ~0.30 vs 0.9 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.

  D800 test data on DxO Mark K-3 test data on DxO Mark
  2,853 vs 1,216 iso
  Take photos in low light with less noise
• 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

  900 vs 560 shots
  Capture more photos
• More viewfinder magnification
  0.70x vs 0.63x
  Get a bigger view of the scene through the eye-level viewfinder
• More pixels
  36.3 vs 24.4 megapixels
  Higher resolution photos
• More AF points
  51 vs 27
  More AF points improve autofocus