• 1/1.7 inch 43.3mm2
  • 12.1 megapixels
  • 24.00mm - 120.00mm (35mm eq.)
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600

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Differences

Canon S100 advantages over Olympus E-M1

  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Integrated ND filter
    Yes vs No
    Shoot in daylight with a large aperture or slow shutter
  • Thinner
    26 mm vs 63 mm
    Thinner
  • Higher max flash sync
    1/2000 vs 1/320 sec
    Reduce the effect of ambient light in flash shots
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Lighter weight
    192g vs 497g
    Lighter weight
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Olympus E-M1 advantages over Canon S100

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    4/3 vs 1/1.7 inch
    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
    ~ 3.75 vs 1.90 microns
    Better low-light and dynamic range (all else equal)
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Fast startup
    ~0.80 vs 2.4 sec
    Faster startup lets you catch the moment
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Better color depth
    23.0 vs 20.7 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    757 vs 153 iso
    Take photos in low light with less noise
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 350 vs 200 shots
    Capture more photos
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More dots on screen
    1037k vs 461k dots
    Can mean greater resolution or a brighter screen
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Less shutter lag
    0.14 vs 0.57 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    16.1 vs 12.1 megapixels
    Higher resolution photos
  • 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
  • Bigger JPEG buffer
    50 vs 8 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/16000 vs 1/2000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    25600 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

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Buy the Olympus E-M1

Review Excerpt

  • Slimmer than past models; 12-megapixel resolution sensor improves on image quality across ISO range; Video includes 1080p, autofocus, and zoom during recording; HDR mode works well.

  • Costs $30 more; Slight buzz when zooming while recording video; Grip isn't as useful as it could be; Slow autofocus.

  • Exceptional rugged, weather-proof, professional build; Lightning fast contrast-detect AF, and phase-detect AF that makes Four Thirds lenses far more responsive; Tons of useful physical controls with immense customizability; Arguably the best image quality of any Micro Four Thirds camera we've tested to date; Large, sharp, high-resolution electronic viewfinder; Advanced Wi-Fi capabilities, including remote control shooting in PASM exposure modes.

  • Bigger and heavier than many other compact system cameras; Most expensive Micro Four Thirds camera on the market to date; Menu system and customization options have a steep learning curve; No optical low-pass filter means greater risk of moire; No built-in flash.

The Competition

Compared to Olympus E-M5

Canon S100
Olympus E-M5
  • $429
  • 1/1.7 inch
  • Built-in GPS
  • Internal flash
  • $900
  • 4/3
  • Larger sensor
  • Eye-level viewfinder
Olympus E-M1
Olympus E-M5
  • $1099
  • 4/3
  • Focus peaking
  • Fast startup
  • $900
  • 4/3
  • Less expensive
  • Thinner

Compared to Canon S95

Canon S100
Canon S95
  • $429
  • 1/1.7 inch
  • Built-in GPS
  • Manual focus
  • $428
  • 1/1.7 inch
  • Bigger JPEG buffer
  • Higher extended ISO
Olympus E-M1
Canon S95
  • $1099
  • 4/3
  • Focus peaking
  • Larger sensor
  • $428
  • 1/1.7 inch
  • Internal flash
  • Thinner

Compared to Panasonic GH3

Canon S100
Panasonic GH3
  • $429
  • 1/1.7 inch
  • Less expensive
  • In-Camera Image Stabilization
  • $798
  • 4/3
  • Larger sensor
  • Tilt-swivel screen
Olympus E-M1
Panasonic GH3
  • $1099
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $798
  • 4/3
  • Tilt-swivel screen
  • Longer stills battery life

Compared to Canon S110

Canon S100
Canon S110
  • $429
  • 1/1.7 inch
  • Built-in GPS
  • $249
  • 1/1.7 inch
  • Touchscreen
  • Built-in Wi-Fi
Olympus E-M1
Canon S110
  • $1099
  • 4/3
  • Focus peaking
  • Larger sensor
  • $249
  • 1/1.7 inch
  • Internal flash
  • Integrated ND filter

Compared to Leica C

Canon S100
Leica C
  • $429
  • 1/1.7 inch
  • Less expensive
  • Built-in GPS
  • $699
  • 1/1.7 inch
  • Eye-level viewfinder
  • In-camera panoramas
Olympus E-M1
Leica C
  • $1099
  • 4/3
  • Focus peaking
  • Larger sensor
  • $699
  • 1/1.7 inch
  • In-camera panoramas
  • Internal flash
Compare Other Cameras?