Canon 5D Mark III vs Panasonic GM1

Canon 5D Mark III advantages over Panasonic GM1

• 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
  ~ 6.25 vs 3.77 microns
  Better low-light and dynamic range (all else equal)
• Fast startup
  ~0.50 vs 0.9 sec
  Faster startup lets you catch the moment
• 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.

  5D Mark III test data on DxO Mark GM1 test data on DxO Mark
  2,293 vs 660 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

  950 vs 230 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
• Higher max flash sync
  1/200 vs 1/50 sec
  Reduce the effect of ambient light in flash shots
• Hot shoe
  Hot shoe vs None
  Off-camera flashes open new possibilities
• More pixels
  22.3 vs 16.0 megapixels
  Higher resolution photos
• Dual card slots
  Yes vs No
  Gives you more storage flexibility
• Headphone jack
  Yes vs No
  Monitor audio recording while you shoot video
• Bulb shutter
  Bulb vs No bulb
  Hold the shutter open manually for long exposures
• Bigger JPEG buffer
  63 vs 10 shots
  Take more JPEG shots before waiting (burst mode)
• Bigger RAW buffer
  18 vs 7 shots
  Larger buffer for RAW shots (burst mode)
• Higher extended ISO
  102400 vs 25600 ISO
  Higher extended ISO can give more low-light flexibility