• 35mm 861.6mm2
  • 36.4 megapixels
  • ISO 100 - 204,800
  • 4/3 224.9mm2
  • 16.0 megapixels
  • ISO 200 - 25,600

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Differences

Pentax K-1 advantages over Panasonic GX85

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.88 vs 3.77 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
  • Better color depth
    25.4 vs 22.9 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    3,280 vs 662 iso
    Take photos in low light with less noise
  • More dynamic range
    14.6 vs 12.6 evs
    Retain detail in highlight and shadows
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Longer stills battery life
    More info 760 vs 290 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More pixels
    36.4 vs 16.0 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
  • Higher extended ISO
    204800 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Panasonic GX85 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
  • Fast startup
    ~0.90 vs 1.2 sec
    Faster startup lets you catch the moment
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    43 mm vs 85 mm
    Thinner
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    10.5 fps vs 4.6 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    Unlimited vs 74 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    10.6 fps vs 4.6 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    44 vs 17 shots
    Larger buffer for RAW shots (burst mode)
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light

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
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • 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
  • 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
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Panasonic GX85

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

  • Excellent build-quality; Good ergonomics for its size; Built-in 5-axis Dual IS, Built-in EVF; Tilting LCD touchscreen monitor; Competitive still image quality; Excellent 4K video quality; Fast autofocus and burst modes; Generous buffers; Tons of advanced features; Built-in Wi-Fi.

  • EVF could be better; Sluggish RAW and RAW+JPEG buffer clearing; No external mic and headphone jacks; Slow x-sync speed; Mediocre battery life.

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
Panasonic GX85
Canon 5DS
  • $598
  • 4/3
  • Less expensive
  • Focus peaking
  • $1299
  • 35mm
  • Larger sensor
  • Fast startup

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
Panasonic GX85
Canon 5DS R
  • $598
  • 4/3
  • Less expensive
  • Focus peaking
  • $1729
  • 35mm
  • Larger sensor
  • Fast startup

Compared to Olympus E-PL8

Pentax K-1
Olympus E-PL8
  • $1800
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
  • $599
  • 4/3
  • Less expensive
  • Touchscreen
Panasonic GX85
Olympus E-PL8
  • $598
  • 4/3
  • Eye-level viewfinder
  • Shoot 4K video
  • $599
  • 4/3
  • Longer stills battery life
  • More telephoto lens reach

Compared to Olympus E-PL9

Pentax K-1
Olympus E-PL9
  • $1800
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
  • $700
  • 4/3
  • Less expensive
  • Shoot 4K video
Panasonic GX85
Olympus E-PL9
  • $598
  • 4/3
  • Eye-level viewfinder
  • Lacks anti-aliasing filter
  • $700
  • 4/3
  • Built-in Bluetooth
  • Longer stills battery life

Compared to Pentax K-1 II

Pentax K-1
Pentax K-1 II
  • $1800
  • 35mm
  • $1747
  • 35mm
  • Higher extended ISO
Panasonic GX85
Pentax K-1 II
  • $598
  • 4/3
  • Less expensive
  • Shoot 4K video
  • $1747
  • 35mm
  • Larger sensor
  • Bigger pixels
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