Leica SL2-S advantages over Canon EOS M3

• Larger sensor
  35mm vs APS-C
  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
• In-Camera Image Stabilization
  Yes vs No
  Reduces the effects of camera shake at slower shutter speeds
• Bigger pixels
  ~ 5.93 vs 3.72 microns
  Better low-light and dynamic range (all else equal)
• Shoot 4K video
  4K (DCI) vs 1080p
  Make sure you have a fast computer
• High resolution composite
  Yes vs No
  Combine multiple shots to form a super hi-res version
• Built-in Bluetooth
  Yes vs No
  Always-on wireless connectivity
• Top deck display
  Yes vs No
  Check settings with a screen on top of the camera
• Newer
  4 years vs 9 years old
  Newer cameras often support more advanced features
• More dots on screen
  2100k vs 1040k dots
  Can mean greater resolution or a brighter screen
• Dual card slots
  Yes vs No
  Gives you more storage flexibility
• Headphone jack
  Yes vs No
  Monitor audio recording while you shoot video
• Lacks anti-aliasing filter
  No Filter vs Filter
  Enjoy sharper photos
• Longer exposure
  500 vs 30 sec
  Long exposures for night shots
• Faster JPEG shooting
  25.0 fps vs 4.2 fps
  Faster JPEG shooting (burst mode)
• Slow-motion videos
  Yes vs No
  Shoot slow-motion videos
• Faster shutter
  1/16000 vs 1/4000 sec
  Shoot wide open in bright light
• Higher extended ISO
  100000 vs 25600 ISO
  Higher extended ISO can give more low-light flexibility