• 35mm 861.6mm2
  • 36.4 megapixels
  • ISO 100 - 204,800
  • APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 32,000

Buy From

Differences

Pentax K-1 advantages over Sony A6100

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 4.88 vs 3.92 microns
    Better low-light and dynamic range (all else equal)
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Longer stills battery life
    More info 760 vs 420 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • More pixels
    36.4 vs 24.2 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 Fixed
    Lets you choose sharper photos or reduced moiré
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    204800 vs 51200 ISO
    Higher extended ISO can give more low-light flexibility

Sony A6100 advantages over Pentax K-1

  • 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
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    59 mm vs 85 mm
    Thinner
  • Newer
    5 years vs 8 years old
    Newer cameras often support more advanced features
  • Faster JPEG shooting
    11.0 fps vs 4.6 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    11.0 fps vs 4.6 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    33 vs 17 shots
    Larger buffer for RAW shots (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
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • 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

User reviews

Buy From

Your purchases support this site

Your purchases support this site

Buy the Sony A6100

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 Canon 5DS

Pentax K-1
Canon 5DS
  • $1800
  • 35mm
  • Focus peaking
  • In-Camera Image Stabilization
  • $1299
  • 35mm
  • Fast startup
  • More cross-type AF points
Sony A6100
Canon 5DS
  • $748
  • APS-C
  • Focus peaking
  • Less expensive
  • $1299
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Canon 5DS R

Pentax K-1
Canon 5DS R
  • $1800
  • 35mm
  • Focus peaking
  • In-Camera Image Stabilization
  • $1729
  • 35mm
  • Fast startup
  • More cross-type AF points
Sony A6100
Canon 5DS R
  • $748
  • APS-C
  • Less expensive
  • Focus peaking
  • $1729
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Pentax K-1 II

Pentax K-1
Pentax K-1 II
  • $1800
  • 35mm
  • $1747
  • 35mm
  • Higher extended ISO
Sony A6100
Pentax K-1 II
  • $748
  • APS-C
  • Less expensive
  • Shoot 4K video
  • $1747
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Fujifilm X-T100

Pentax K-1
Fujifilm X-T100
  • $1800
  • 35mm
  • Lens selection
  • Larger sensor
  • $599
  • APS-C
  • Tilt-swivel screen
  • Shoot 4K video
Sony A6100
Fujifilm X-T100
  • $748
  • APS-C
  • Slower slow-motion
  • NFC
  • $599
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Sony A6400

Pentax K-1
Sony A6400
  • $1800
  • 35mm
  • Lens selection
  • Larger sensor
  • $898
  • APS-C
  • Shoot 4K video
  • Touchscreen
Sony A6100
Sony A6400
  • $748
  • APS-C
  • Less expensive
  • $898
  • APS-C
  • Higher extended ISO
Compare Other Cameras?