• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • Medium format 1,441.0mm2
  • 51.4 megapixels
  • ISO 100 - 12,800

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Differences

Pentax K-S1 advantages over Fujifilm GFX 50R

  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Longer stills battery life
    More info 480 vs 400 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Optional anti-aliasing filter
    Optional vs None
    Lets you choose sharper photos or reduced moiré
  • Faster JPEG shooting
    5.4 fps vs 3.0 fps
    Faster JPEG shooting (burst mode)

Fujifilm GFX 50R advantages over Pentax K-S1

  • Larger sensor
    Medium format vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.31 vs 4.29 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
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Newer
    6 years vs 10 years old
    Newer cameras often support more advanced features
  • More dots on screen
    2360k vs 922k dots
    Can mean greater resolution or a brighter screen
  • More viewfinder magnification
    0.77x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    51.4 vs 20.1 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Longer exposure
    3600 vs 30 sec
    Long exposures for night shots
  • Bigger JPEG buffer
    Unlimited 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
  • Higher extended ISO
    102400 vs 51200 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • 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
  • 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
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • 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
  • 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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Review Excerpt

  • Same superb image quality as the 50S; Slightly improved performance; Less expensive and slimmer than 50S.

  • Lackluster ergonomics; Sluggish autofocus; Poor video features and performance.

  • Read our Fujifilm GFX 50R Review

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

Compare Pentax K-S1 vs Sony A58

Fujifilm GFX 50R
Sony A58
  • $4599
  • Medium format
  • Larger sensor
  • Bigger pixels
  • $598
  • APS-C
  • In-Camera Image Stabilization
  • In-camera panoramas

Compare Fujifilm GFX 50R vs Sony A58

Compared to Nikon D5500

Pentax K-S1
Nikon D5500
  • $502
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $697
  • APS-C
  • Tilt-swivel screen
  • Touchscreen

Compare Pentax K-S1 vs Nikon D5500

Fujifilm GFX 50R
Nikon D5500
  • $4599
  • Medium format
  • Focus peaking
  • Larger sensor
  • $697
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compare Fujifilm GFX 50R vs Nikon D5500

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

Compare Pentax K-S1 vs Pentax K-S2

Fujifilm GFX 50R
Pentax K-S2
  • $4599
  • Medium format
  • Larger sensor
  • Bigger pixels
  • $499
  • APS-C
  • Tilt-swivel screen
  • In-Camera Image Stabilization

Compare Fujifilm GFX 50R vs Pentax K-S2

Compared to Hasselblad X1D

Pentax K-S1
Hasselblad X1D
  • $502
  • APS-C
  • In-Camera Image Stabilization
  • Internal flash
  • $4999
  • Medium format
  • Larger sensor
  • Bigger pixels

Compare Pentax K-S1 vs Hasselblad X1D

Fujifilm GFX 50R
Hasselblad X1D
  • $4599
  • Medium format
  • Less expensive
  • Tiltable Screen
  • $4999
  • Medium format
  • Higher max flash sync
  • Headphone jack

Compare Fujifilm GFX 50R vs Hasselblad X1D

Compared to Hasselblad X1D II

Pentax K-S1
Hasselblad X1D II
  • $502
  • APS-C
  • In-Camera Image Stabilization
  • Internal flash
  • $5750
  • Medium format
  • Larger sensor
  • Bigger pixels

Compare Pentax K-S1 vs Hasselblad X1D II

Fujifilm GFX 50R
Hasselblad X1D II
  • $4599
  • Medium format
  • Less expensive
  • Tiltable Screen
  • $5750
  • Medium format
  • Built-in GPS
  • Higher max flash sync

Compare Fujifilm GFX 50R vs Hasselblad X1D II

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