Samsung GX-20 vs Pentax 645D

Pentax 645D advantages over Samsung GX-20

• Larger sensor
  Medium format vs APS-C
  More sensor area. Bigger is (generally) better.
• Bigger pixels
  ~ 6.06 vs 5.07 microns
  Better low-light and dynamic range (all else equal)
• 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.

  645D test data on DxO Mark GX-20 test data on DxO Mark
  1,262 vs 714 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.

  645D test data on DxO Mark GX-20 test data on DxO Mark
  12.6 vs 11.2 evs
  Retain detail in highlight and shadows
• HDMI out
  HDMI out vs None
  Use HDMI output to monitor or review video
• More dots on screen
  921k vs 230k dots
  Can mean greater resolution or a brighter screen
• More pixels
  40.0 vs 14.6 megapixels
  Higher resolution photos
• Dual card slots
  Yes vs No
  Gives you more storage flexibility
• Lacks anti-aliasing filter
  No Filter vs Filter
  Enjoy sharper photos