• 35mm 861.6mm2
  • 36.4 megapixels
  • ISO 100 - 819,200
  • 35mm 858.0mm2
  • 24.6 megapixels
  • ISO 100 - 25,600

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Differences

Pentax K-1 II advantages over Sigma fp

  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Higher max flash sync
    1/200 vs 1/30 sec
    Reduce the effect of ambient light in flash shots
  • More pixels
    36.4 vs 24.6 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Optional anti-aliasing filter
    Optional vs None
    Lets you choose sharper photos or reduced moiré
  • Bigger JPEG buffer
    77 vs 12 shots
    Take more JPEG shots before waiting (burst mode)
  • Bigger RAW buffer
    17 vs 12 shots
    Larger buffer for RAW shots (burst mode)
  • Higher extended ISO
    819200 vs 102400 ISO
    Higher extended ISO can give more low-light flexibility

Sigma fp advantages over Pentax K-1 II

  • Less expensive
    $1599 vs $1897
    Save money for lenses or accessories
  • Bigger pixels
    ~ 5.98 vs 4.88 microns
    Better low-light and dynamic range (all else equal)
  • 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
  • Thinner
    45 mm vs 85 mm
    Thinner
  • Lighter weight
    422g vs 1010g
    Lighter weight
  • More dots on screen
    2100k vs 1037k dots
    Can mean greater resolution or a brighter screen
  • Faster JPEG shooting
    18.0 fps vs 4.5 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    18.0 fps vs 4.6 fps
    Faster RAW shooting in 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
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • 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 Bluetooth
    Neither provide
    Always-on wireless connectivity
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash

User reviews

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Buy the Pentax K-1 II
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  • Body Only
  • Kit with 28-105mm Lens
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Buy the Sigma fp
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  • Body Only
  • Kit with 45mm f/2.8 lens
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Review Excerpt

  • Excellent build and comfortable handling; Bright, roomy viewfinder and articulated LCD; Great image quality; Good performance for the class; In-camera stabilization, GPS and Wi-Fi; Incredibly feature-rich design.

  • Bulkier than APS-C DSLRs; Top ISOs are for the spec sheet, not the real world; JPEGs are a bit punchy by default; Slow startup; Below-average battery life; Only a relatively modest update to the K-1.

  • Read our Pentax K-1 II Review

The Competition

Compared to Pentax K-1

Pentax K-1 II
Pentax K-1
  • $1664
  • 35mm
  • Higher extended ISO
  • $1800
  • 35mm

Compare Pentax K-1 II vs Pentax K-1

Sigma fp
Pentax K-1
  • $1699
  • 35mm
  • Bigger pixels
  • Shoot 4K video
  • $1800
  • 35mm
  • Eye-level viewfinder
  • Tiltable Screen

Compare Sigma fp vs Pentax K-1

Compared to Canon 5D Mark IV

Pentax K-1 II
Canon 5D Mark IV
  • $1664
  • 35mm
  • Less expensive
  • Focus peaking
  • $2249
  • 35mm
  • Shoot 4K video
  • Touchscreen

Compare Pentax K-1 II vs Canon 5D Mark IV

Sigma fp
Canon 5D Mark IV
  • $1699
  • 35mm
  • Focus peaking
  • Less expensive
  • $2249
  • 35mm
  • Eye-level viewfinder
  • Built-in Wi-Fi

Compare Sigma fp vs Canon 5D Mark IV

Compared to Nikon D850

Pentax K-1 II
Nikon D850
  • $1664
  • 35mm
  • Less expensive
  • In-Camera Image Stabilization
  • $2464
  • 35mm
  • Shoot 4K video
  • Touchscreen

Compare Pentax K-1 II vs Nikon D850

Sigma fp
Nikon D850
  • $1699
  • 35mm
  • Less expensive
  • In-Camera Image Stabilization
  • $2464
  • 35mm
  • Eye-level viewfinder
  • Tiltable Screen

Compare Sigma fp vs Nikon D850

Compared to Sony A7C

Pentax K-1 II
Sony A7C
  • $1664
  • 35mm
  • Lens selection
  • High resolution composite
  • $1598
  • 35mm
  • Tilt-swivel screen
  • Bigger pixels

Compare Pentax K-1 II vs Sony A7C

Sigma fp
Sony A7C
  • $1699
  • 35mm
  • Thinner
  • More dots on screen
  • $1598
  • 35mm
  • Tilt-swivel screen
  • Eye-level viewfinder

Compare Sigma fp vs Sony A7C

Compared to Sigma fp L

Pentax K-1 II
Sigma fp L
  • $1664
  • 35mm
  • Eye-level viewfinder
  • Bigger pixels
  • $2499
  • 35mm
  • Shoot 4K video
  • Touchscreen

Compare Pentax K-1 II vs Sigma fp L

Sigma fp
Sigma fp L
  • $1699
  • 35mm
  • Bigger pixels
  • Higher max flash sync
  • $2499
  • 35mm
  • More pixels
  • Has anti-aliasing filter

Compare Sigma fp vs Sigma fp L

Compare Other Cameras?