Pentax 645D vs Olympus TG-4

Pentax 645D advantages over Olympus TG-4

• Larger sensor
  Medium format vs 1/2.3 inch
  More sensor area. Bigger is (generally) better.
• Eye-level viewfinder
  Eye-level vs Rear display only
  You'll be able to frame photos even when the sun is out
• Bigger pixels
  ~ 6.06 vs 1.34 microns
  Better low-light and dynamic range (all else equal)
• Fast startup
  ~0.70 vs 1.0 sec
  Faster startup lets you catch the moment
• 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

  800 vs 380 shots
  Capture more photos
• Top deck display
  Yes vs No
  Check settings with a screen on top of the camera
• Higher-res screen
  307k vs 154k pixels
  More detail on the screen lets you judge focus and composition
• Hot shoe
  Hot shoe vs None
  Off-camera flashes open new possibilities
• Less shutter lag
  0.16 vs 0.26 sec
  Focus and take a photo quickly (wide angle)
• More pixels
  40.0 vs 16.0 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
• Longer exposure
  30 vs 4 sec
  Long exposures for night shots
• Bulb shutter
  Bulb vs No bulb
  Hold the shutter open manually for long exposures
• Faster shutter
  1/4000 vs 1/2000 sec
  Shoot wide open in bright light