• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • 1/2.3 inch 28.1mm2
  • 16.2 megapixels
  • 24.00mm - 1200.00mm (35mm eq.)

Buy From

Differences

Pentax K-S1 advantages over Fujifilm S9800

  • Larger sensor
    APS-C vs 1/2.3 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.29 vs 1.34 microns
    Better low-light and dynamic range (all else equal)
  • RAW file ability
    Yes vs No
    Gives you more flexibility to develop your photos later
  • Thinner
    69 mm vs 116 mm
    Thinner
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Higher-res screen
    307k vs 153k pixels
    More detail on the screen lets you judge focus and composition
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    20.1 vs 16.2 megapixels
    Higher resolution photos
  • Longer exposure
    30 vs 8 sec
    Long exposures for night shots
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Bigger JPEG buffer
    20 vs 10 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/6000 vs 1/1700 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

Fujifilm S9800 advantages over Pentax K-S1

  • Less expensive
    $330 vs $800 (MSRP)
    Save money for lenses or accessories
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Integrated ND filter
    Yes vs No
    Shoot in daylight with a large aperture or slow shutter
  • Faster JPEG shooting
    10.0 fps vs 5.4 fps
    Faster JPEG shooting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

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
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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

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
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • 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
  • 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

Buy From

Your purchases support this site

Buy the Pentax K-S1
Body Only
  • Body Only
  • Kit with 18-55mm and 50-200mm Lenses
All K-S1 Deals

Your purchases support this site

Buy the Fujifilm S9800
Fuji S9800 (Black)
All S9800 Deals

Review Excerpt

The Competition

Compared to Fujifilm SL1000

Pentax K-S1
Fujifilm SL1000
  • $502
  • APS-C
  • Focus peaking
  • Larger sensor
  • $650
  • 1/2.3 inch
  • Less expensive
  • Tiltable Screen

Compare Pentax K-S1 vs Fujifilm SL1000

Fujifilm S9800
Fujifilm SL1000
  • $504
  • 1/2.3 inch
  • Less expensive
  • Focus peaking
  • $650
  • 1/2.3 inch
  • Tiltable Screen
  • RAW file ability

Compare Fujifilm S9800 vs Fujifilm SL1000

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 S9800
Sony A58
  • $504
  • 1/2.3 inch
  • Less expensive
  • Integrated ND filter
  • $598
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Fujifilm S9800 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 S9800
Nikon D5500
  • $504
  • 1/2.3 inch
  • Focus peaking
  • In-Camera Image Stabilization
  • $697
  • APS-C
  • Tilt-swivel screen
  • Larger sensor

Compare Fujifilm S9800 vs Nikon D5500

Compared to Fujifilm S9900W

Pentax K-S1
Fujifilm S9900W
  • $502
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $719
  • 1/2.3 inch
  • Less expensive
  • In-camera panoramas

Compare Pentax K-S1 vs Fujifilm S9900W

Fujifilm S9800
Fujifilm S9900W
  • $504
  • 1/2.3 inch
  • $719
  • 1/2.3 inch
  • Built-in Wi-Fi

Compare Fujifilm S9800 vs Fujifilm S9900W

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 S9800
Pentax K-S2
  • $504
  • 1/2.3 inch
  • Less expensive
  • In-camera panoramas
  • $499
  • APS-C
  • Tilt-swivel screen
  • Larger sensor

Compare Fujifilm S9800 vs Pentax K-S2

Compare Other Cameras?