• 35mm 861.6mm2
  • 36.4 megapixels
  • ISO 100 - 204,800
  • Medium format 2,169.5mm2
  • 101.1 megapixels
  • ISO 50 - 12,800

Buy From

Differences

Pentax K-1 advantages over Phase One XF 100MP

  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • 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
  • Fast startup
    ~1.20 vs 10.0 sec
    Faster startup lets you catch the moment
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Thinner
    85 mm vs 160 mm
    Thinner
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Higher max flash sync
    1/200 vs 1/125 sec
    Reduce the effect of ambient light in flash shots
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • Less shutter lag
    0.09 vs 0.33 sec
    Focus and take a photo quickly (wide angle)
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • 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
  • Faster RAW shooting
    4.6 fps vs 0.6 fps
    Faster RAW shooting in burst mode
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    204800 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

Phase One XF 100MP advantages over Pentax K-1

  • Larger sensor
    Medium format vs 35mm
    More sensor area. Bigger is (generally) better.
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • More pixels
    101.1 vs 36.4 megapixels
    Higher resolution photos
  • Longer exposure
    3600 vs 30 sec
    Long exposures for night shots
  • Bigger RAW buffer
    Unlimited vs 17 shots
    Larger buffer for RAW shots (burst mode)

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
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • Top deck display
    Both provide
    Check settings with a screen on top of the camera
  • Pentaprism viewfinder
    Both provide
    Much better viewfinder picture fidelity
  • HDMI out
    Both provide
    Use an external screen 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
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Review Excerpt

  • Unlocks the full potential of full-frame Pentax lenses; Excellent image quality; Great ergonomics and build; Very compact for full-frame; Decent performance; Fast autofocus with great low-light capabilities; Very wide sensitivity range; Bright, accurate viewfinder; Articulated LCD; Stabilization, Wi-Fi and GPS in-camera

  • No built-in flash strobe; Quite heavy compared to APS-C flagships; Somewhat soft images and blown highlights by default in JPEG mode; Warm Auto white balance indoors; Slow startup and buffer clearing; Small top-deck status display; Weak viewfinder illumination; Below-average battery life for DSLR

The Competition

Compared to Pentax 645Z

Pentax K-1
Pentax 645Z
  • $1897
  • 35mm
  • Lens selection
  • Less expensive
  • $5330
  • Medium format
  • Larger sensor
  • Higher effective ISO
Phase One XF 100MP
Pentax 645Z
  • $48990
  • Medium format
  • Larger sensor
  • Touchscreen
  • $5330
  • Medium format
  • Tiltable Screen
  • Fast startup

Compared to Leica S (Typ 007)

Pentax K-1
Leica S (Typ 007)
  • $1897
  • 35mm
  • Lens selection
  • Less expensive
  • $18950
  • Medium format
  • Larger sensor
  • Bigger pixels
Phase One XF 100MP
Leica S (Typ 007)
  • $48990
  • Medium format
  • Larger sensor
  • Touchscreen
  • $18950
  • Medium format
  • Bigger pixels
  • Shoot 4K video

Compared to Canon 5DS

Pentax K-1
Canon 5DS
  • $1897
  • 35mm
  • Focus peaking
  • Less expensive
  • $3499
  • 35mm
  • Fast startup
  • More cross-type AF points
Phase One XF 100MP
Canon 5DS
  • $48990
  • Medium format
  • Focus peaking
  • Larger sensor
  • $3499
  • 35mm
  • Fast startup
  • Thinner

Compared to Canon 5D Mark IV

Pentax K-1
Canon 5D Mark IV
  • $1897
  • 35mm
  • Less expensive
  • Focus peaking
  • $3199
  • 35mm
  • Shoot 4K video
  • Touchscreen
Phase One XF 100MP
Canon 5D Mark IV
  • $48990
  • Medium format
  • Focus peaking
  • Larger sensor
  • $3199
  • 35mm
  • Bigger pixels
  • Shoot 4K video

Compared to Sony A99 II

Pentax K-1
Sony A99 II
  • $1897
  • 35mm
  • Lens selection
  • Less expensive
  • $3198
  • 35mm
  • Tilt-swivel screen
  • Shoot 4K video
Phase One XF 100MP
Sony A99 II
  • $48990
  • Medium format
  • Larger sensor
  • Touchscreen
  • $3198
  • 35mm
  • Tilt-swivel screen
  • In-Camera Image Stabilization
Compare Other Cameras?