• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • APS-C 332.3mm2
  • 24.2 megapixels
  • ISO 100 - 25,600

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Differences

Pentax K-S1 advantages over Canon EOS M100

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Larger sensor
    APS-C 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
    ~ 4.29 vs 3.72 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 480 vs 295 shots
    Capture more photos
  • More telephoto lens reach
    83 mm vs 72 mm
    Capture objects farther away with the kit lens
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Faster shutter
    1/6000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Canon EOS M100 advantages over Pentax K-S1

  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Higher effective ISO
    1,272 vs 1,061 iso
    Take photos in low light with less noise
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Thinner
    35 mm vs 69 mm
    Thinner
  • Newer
    2 years vs 6 years old
    Newer cameras often support more advanced features
  • Lighter weight
    432g vs 765g
    Lighter weight
  • More pixels
    24.2 vs 20.1 megapixels
    Higher resolution photos
  • Wider angle kit lens
    24 mm vs 27 mm
    Capture more of the scene with the included lens
  • Faster JPEG shooting
    6.1 fps vs 5.4 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    91 vs 20 shots
    Take more JPEG shots before waiting (burst mode)

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

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
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Pentax K-S1

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Buy the Canon EOS M100

Review Excerpt

The Competition

Compared to Sony A58

Pentax K-S1
Sony A58
  • $502
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $598
  • APS-C
  • In-camera panoramas
  • Tiltable Screen
Canon EOS M100
Sony A58
  • $449
  • APS-C
  • Less expensive
  • Touchscreen
  • $598
  • APS-C
  • Lens selection
  • Larger sensor

Compared to Nikon D5500

Pentax K-S1
Nikon D5500
  • $502
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $461
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
Canon EOS M100
Nikon D5500
  • $449
  • APS-C
  • Focus peaking
  • NFC
  • $461
  • APS-C
  • Lens selection
  • Larger sensor

Compared to Pentax K-S2

Pentax K-S1
Pentax K-S2
  • $502
  • APS-C
  • Higher-res screen
  • $499
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
Canon EOS M100
Pentax K-S2
  • $449
  • APS-C
  • Less expensive
  • Touchscreen
  • $499
  • APS-C
  • Lens selection
  • Larger sensor

Compared to Fujifilm X-A5

Pentax K-S1
Fujifilm X-A5
  • $502
  • APS-C
  • Lens selection
  • Eye-level viewfinder
  • $474
  • APS-C
  • Shoot 4K video
  • Touchscreen
Canon EOS M100
Fujifilm X-A5
  • $449
  • APS-C
  • Fast startup
  • NFC
  • $474
  • APS-C
  • Lens selection
  • Larger sensor

Compared to Canon EOS M200

Pentax K-S1
Canon EOS M200
  • $502
  • APS-C
  • Lens selection
  • Larger sensor
  • $549
  • APS-C
  • Shoot 4K video
  • Touchscreen
Canon EOS M100
Canon EOS M200
  • $449
  • APS-C
  • Less expensive
  • NFC
  • $549
  • APS-C
  • Shoot 4K video
  • Newer
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