• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • 4/3 224.9mm2
  • 17.0 megapixels
  • 24.00mm - 75.00mm (35mm eq.)

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Differences

Pentax K-S1 advantages over Panasonic LX100 II

  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.29 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 480 vs 300 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • More pixels
    20.1 vs 17.0 megapixels
    Higher resolution photos
  • Optional anti-aliasing filter
    Optional vs None
    Lets you choose sharper photos or reduced moiré
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Panasonic LX100 II advantages over Pentax K-S1

  • Shoot 4K video
    4K (UHD) vs 1080p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Higher max flash sync
    1/4000 vs 1/180 sec
    Reduce the effect of ambient light in flash shots
  • Newer
    6 years vs 10 years old
    Newer cameras often support more advanced features
  • Higher-res screen
    413k vs 307k pixels
    More detail on the screen lets you judge focus and composition
  • More viewfinder magnification
    0.70x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    11.3 fps vs 5.4 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    109 vs 20 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/16000 vs 1/6000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • 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
  • 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
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • 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
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter
  • 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

Buy From

Your purchases support this site

Buy the Pentax K-S1

Review Excerpt

  • Compact coat-pocket friendly body with plenty of dedicated controls; Great electronic viewfinder; Impressive image quality for its class; Generous performance; Decent battery life.

  • Too big for a pants pocket; No articulation for LCD; Relatively short zoom range compared to some rivals; Can't use full sensor area at any aspect ratio; Not the best choice for video.

The Competition

Compared to Sony A58

Pentax K-S1
Sony A58
  • $502
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $598
  • APS-C
  • Less expensive
  • In-camera panoramas
Panasonic LX100 II
Sony A58
  • $898
  • 4/3
  • Shoot 4K video
  • Touchscreen
  • $598
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Pentax K-500

Pentax K-S1
Pentax K-500
  • $502
  • APS-C
  • HDMI out
  • More pixels
  • $597
  • APS-C
  • Less expensive
  • Longer stills battery life
Panasonic LX100 II
Pentax K-500
  • $898
  • 4/3
  • Shoot 4K video
  • Touchscreen
  • $597
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Panasonic LX100

Pentax K-S1
Panasonic LX100
  • $502
  • APS-C
  • Larger sensor
  • Higher effective ISO
  • $598
  • 4/3
  • Shoot 4K video
  • In-camera panoramas
Panasonic LX100 II
Panasonic LX100
  • $898
  • 4/3
  • Touchscreen
  • Built-in Bluetooth
  • $598
  • 4/3
  • Less expensive
  • Fast startup

Compared to Leica D-LUX (Typ 109)

Pentax K-S1
Leica D-LUX (Typ 109)
  • $502
  • APS-C
  • Larger sensor
  • Internal flash
  • $875
  • 4/3
  • Shoot 4K video
  • In-camera panoramas
Panasonic LX100 II
Leica D-LUX (Typ 109)
  • $898
  • 4/3
  • Touchscreen
  • Built-in Bluetooth
  • $875
  • 4/3
  • Bigger pixels
  • Has anti-aliasing filter

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
Panasonic LX100 II
Pentax K-S2
  • $898
  • 4/3
  • Shoot 4K video
  • Touchscreen
  • $499
  • APS-C
  • Tilt-swivel screen
  • Larger sensor
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