• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • APS-C 369.0mm2
  • 28.2 megapixels
  • ISO 100 - 25,600

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Differences

Pentax K-S1 advantages over Samsung NX500

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Less expensive
    $500 vs $799
    Save money for lenses or accessories
  • 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 3.63 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 480 vs 370 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Optional anti-aliasing filter
    Optional vs None
    Lets you choose sharper photos or reduced moiré

Samsung NX500 advantages over Pentax K-S1

  • Shoot 4K video
    4K (DCI) 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
  • 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
    1,379 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
    42 mm vs 69 mm
    Thinner
  • Lighter weight
    454g vs 765g
    Lighter weight
  • More pixels
    28.2 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
    8.8 fps vs 5.4 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    38 vs 20 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • 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
  • 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

User reviews

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Your purchases support this site

Buy the Pentax K-S1

Your purchases support this site

Buy the Samsung NX500

Review Excerpt

  • Very good image quality with high-resolution files; Excellent high ISO performance with RAW files; Very good dynamic range; Fast AF performance; Compact design with good build quality; Better ergonomics than predecessor; 4K video recording.

  • High ISO noise reduction too strong; AF struggles in low-light; Buffer depth is shallow with RAW files; No option for EVF; No built-in flash (external one included); 4K Video is cropped with narrower FOV.

The Competition

Compared to Sony A58

Pentax K-S1
Sony A58
  • $500
  • APS-C
  • Lens selection
  • Less expensive
  • $598
  • APS-C
  • In-camera panoramas
  • Tiltable Screen
Samsung NX500
Sony A58
  • $1147
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $598
  • APS-C
  • Lens selection
  • Less expensive

Compared to Nikon D5500

Pentax K-S1
Nikon D5500
  • $500
  • APS-C
  • Less expensive
  • Focus peaking
  • $597
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
Samsung NX500
Nikon D5500
  • $1147
  • APS-C
  • Focus peaking
  • Shoot 4K video
  • $597
  • APS-C
  • Lens selection
  • Tilt-swivel screen

Compared to Pentax K-S2

Pentax K-S1
Pentax K-S2
  • $500
  • APS-C
  • Higher-res screen
  • $499
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
Samsung NX500
Pentax K-S2
  • $1147
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $499
  • APS-C
  • Lens selection
  • Less expensive

Compared to Sony A6300

Pentax K-S1
Sony A6300
  • $500
  • APS-C
  • Lens selection
  • Less expensive
  • $823
  • APS-C
  • Shoot 4K video
  • In-camera panoramas
Samsung NX500
Sony A6300
  • $1147
  • APS-C
  • Touchscreen
  • Built-in Bluetooth
  • $823
  • APS-C
  • Lens selection
  • Eye-level viewfinder

Compared to Sony A6500

Pentax K-S1
Sony A6500
  • $500
  • APS-C
  • Lens selection
  • Less expensive
  • $1198
  • APS-C
  • Shoot 4K video
  • Touchscreen
Samsung NX500
Sony A6500
  • $1147
  • APS-C
  • Less expensive
  • More pixels
  • $1198
  • APS-C
  • Lens selection
  • Eye-level viewfinder
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