Canon EOS-1D C vs Olympus E-PL7

Canon EOS-1D C advantages over Olympus E-PL7

• Larger sensor
  35mm vs 4/3
  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
  ~ 6.94 vs 3.75 microns
  Better low-light and dynamic range (all else equal)
• Shoot 4K video
  4K (DCI) vs 1080p
  Make sure you have a fast computer
• 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
• Shoots 24p video
  Yes vs No
  Gives your movies a big-screen feel
• Shoots 60p video
  Yes vs No
  A faster framerate can give you more editing options
• Dual card slots
  Yes vs No
  Gives you more storage flexibility
• Headphone jack
  Yes vs No
  Monitor audio recording while you shoot video
• Faster JPEG shooting
  12.0 fps vs 8.7 fps
  Faster JPEG shooting (burst mode)
• Faster shutter
  1/8000 vs 1/4000 sec
  Shoot wide open in bright light
• Higher extended ISO
  204800 vs 25600 ISO
  Higher extended ISO can give more low-light flexibility