Ricoh GR III advantages over Canon 170 IS

• Larger sensor
  APS-C vs 1/2.3 inch
  More sensor area. Bigger is (generally) better.
• Bigger pixels
  ~ 3.92 vs 1.20 microns
  Better low-light and dynamic range (all else equal)
• Touchscreen
  Touch vs No touch
  Interact with your camera just like your smartphone
• Larger lens aperture
  f/2.8 vs f/3.6
  Take photos in low-light or isolate your subject
• RAW file ability
  Yes vs No
  Gives you more flexibility to develop your photos later
• Built-in Wi-Fi
  Wi-Fi vs None
  Share your photos wirelessly
• Built-in Bluetooth
  Yes vs No
  Always-on wireless connectivity
• On-sensor phase detect
  Yes vs No
  Usually improves live view and video AF performance
• Manual focus
  Yes vs No
  AF is for the weak. Real photographers focus manually.
• Integrated ND filter
  Yes vs No
  Shoot in daylight with a large aperture or slow shutter
• Newer
  6 years vs 10 years old
  Newer cameras often support more advanced features
• Shoots 24p video
  Yes vs No
  Gives your movies a big-screen feel
• Higher-res screen
  346k vs 78k pixels
  More detail on the screen lets you judge focus and composition
• Hot shoe
  Hot shoe vs None
  Off-camera flashes open new possibilities
• Shoots 1080p video
  Yes vs No
  You'll want this if you shoot video
• More pixels
  24.2 vs 20.0 megapixels
  Higher resolution photos
• Shoots 60p video
  Yes vs No
  A faster framerate can give you more editing options
• Longer exposure
  1200 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
  4.3 fps vs 0.8 fps
  Faster JPEG shooting (burst mode)
• Faster shutter
  1/4000 vs 1/2000 sec
  Shoot wide open in bright light
• Higher extended ISO
  102400 vs 1600 ISO
  Higher extended ISO can give more low-light flexibility