Canon SX20 IS vs Olympus E-M5

Olympus E-M5 advantages over Canon SX20 IS

• Larger sensor
  4/3 vs 1/2.3 inch
  More sensor area. Bigger is (generally) better.
• Bigger pixels
  ~ 3.75 vs 1.54 microns
  Better low-light and dynamic range (all else equal)
• Touchscreen
  Touch vs No touch
  Interact with your camera just like your smartphone
• RAW file ability
  Yes vs No
  Gives you more flexibility to develop your photos later
• Fast startup
  ~1.10 vs 2.4 sec
  Faster startup lets you catch the moment
• Manual focus
  Yes vs No
  AF is for the weak. Real photographers focus manually.
• Thinner
  43 mm vs 86 mm
  Thinner
• More dots on screen
  614k vs 230k dots
  Can mean greater resolution or a brighter screen
• Less shutter lag
  0.28 vs 0.54 sec
  Focus and take a photo quickly (wide angle)
• More pixels
  16.1 vs 12.1 megapixels
  Higher resolution photos
• Shoots 60p video
  Yes vs No
  A faster framerate can give you more editing options
• Longer exposure
  60 vs 15 sec
  Long exposures for night shots
• Bulb shutter
  Bulb vs No bulb
  Hold the shutter open manually for long exposures
• Faster JPEG shooting
  8.9 fps vs 1.1 fps
  Faster JPEG shooting (burst mode)
• Higher extended ISO
  25600 vs 3200 ISO
  Higher extended ISO can give more low-light flexibility