• APS-C 369.7mm2
  • 14.6 megapixels
  •  
  • APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200

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Differences

Samsung NX100 advantages over Pentax K-S1

  • Less expensive
    $600 vs $800 (MSRP)
    Save money for lenses or accessories
  • Bigger pixels
    ~ 5.16 vs 4.29 microns
    Better low-light and dynamic range (all else equal)
  • Thinner
    34 mm vs 69 mm
    Thinner
  • Lighter weight
    463g vs 765g
    Lighter weight

Pentax K-S1 advantages over Samsung NX100

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • 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
  • Higher effective ISO
    1,061 vs 563 iso
    Take photos in low light with less noise
  • More dynamic range
    13.0 vs 10.7 evs
    Retain detail in highlight and shadows
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More dots on screen
    922k vs 614k dots
    Can mean greater resolution or a brighter screen
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    20.1 vs 14.6 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Wider angle kit lens
    27 mm vs 31 mm
    Capture more of the scene with the included lens
  • Faster JPEG shooting
    5.4 fps vs 2.9 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    20 vs 8 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/6000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • 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
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • 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

Review Excerpt

The Competition

Compared to Sony NEX-5

Samsung NX100
Sony NEX-5
  • $799
  • APS-C
  • Less expensive
  • Longer stills battery life
  • $700
  • APS-C
  • Lens selection
  • In-camera panoramas
Pentax K-S1
Sony NEX-5
  • $502
  • APS-C
  • Lens selection
  • Focus peaking
  • $700
  • APS-C
  • Bigger pixels
  • In-camera panoramas

Compared to Sony NEX-5N

Samsung NX100
Sony NEX-5N
  • $799
  • APS-C
  • Less expensive
  • Fast startup
  • $700
  • APS-C
  • Lens selection
  • In-camera panoramas
Pentax K-S1
Sony NEX-5N
  • $502
  • APS-C
  • Lens selection
  • Focus peaking
  • $700
  • APS-C
  • In-camera panoramas
  • Tiltable Screen

Compared to Sony NEX-6

Samsung NX100
Sony NEX-6
  • $799
  • APS-C
  • Less expensive
  • Fast startup
  • $549
  • APS-C
  • Lens selection
  • Focus peaking
Pentax K-S1
Sony NEX-6
  • $502
  • APS-C
  • Lens selection
  • Less expensive
  • $549
  • APS-C
  • In-camera panoramas
  • Tiltable Screen

Compared to Sony A58

Samsung NX100
Sony A58
  • $799
  • APS-C
  • Bigger pixels
  • Fast startup
  • $598
  • APS-C
  • Lens selection
  • Focus peaking
Pentax K-S1
Sony A58
  • $502
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $598
  • APS-C
  • Less expensive
  • In-camera panoramas

Compared to Pentax K-S2

Samsung NX100
Pentax K-S2
  • $799
  • APS-C
  • Less expensive
  • Bigger pixels
  • $499
  • APS-C
  • Tilt-swivel screen
  • Lens selection
Pentax K-S1
Pentax K-S2
  • $502
  • APS-C
  • Higher-res screen
  • $499
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
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