Canon 1D Mark IV vs Pentax K-S1

Canon 1D Mark IV advantages over Pentax K-S1

• Larger sensor
  APS-H vs APS-C
  More sensor area. Bigger is (generally) better.
• Bigger pixels
  ~ 5.70 vs 4.29 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.

  1D Mark IV test data on DxO Mark K-S1 test data on DxO Mark
  1,320 vs 1,061 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

  1500 vs 480 shots
  Capture more photos
• Top deck display
  Yes vs No
  Check settings with a screen on top of the camera
• External Mic Jack
  Jack vs No jack
  Improved sound fidelity when shooting video
• More cross-type AF points
  39 vs 9
  Cross-type AF points improve autofocus performance
• Dual card slots
  Yes vs No
  Gives you more storage flexibility
• More AF points
  45 vs 11
  More AF points improve autofocus
• Faster JPEG shooting
  9.9 fps vs 5.4 fps
  Faster JPEG shooting (burst mode)
• Bigger JPEG buffer
  46 vs 20 shots
  Take more JPEG shots before waiting (burst mode)
• Higher extended ISO
  102400 vs 51200 ISO
  Higher extended ISO can give more low-light flexibility