Pentax K-1 vs Fujifilm GFX 100S

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Pentax K-1 vs Fujifilm GFX 100S

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35mm 861.6mm²
36.4 megapixels
ISO 100 - 204,800

Go in depth with our full Pentax K-1 Review.
How does it shoot? Pentax K-1 in the real world.
See real-world photos taken with the K-1.
Compare Pentax K-1 image quality against competitors.
What’s the bottom line? Read our Pentax K-1 conclusion.

Medium format 1,441.0mm²
102.0 megapixels
ISO 100 - 12,800

Go in depth with our full Fujifilm GFX 100S Review.
See real-world photos taken with the GFX 100S.
Compare Fujifilm GFX 100S image quality against competitors.

Succeeded by the Pentax K-1 II
Compare K-1 vs K-1 II
Compare Pentax K-1 II vs Fujifilm GFX 100S

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Differences

Pentax K-1 advantages over Fujifilm GFX 100S

Bigger pixels
~ 4.88 vs 3.76 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

Longer stills battery life

Cameras with longer battery life can take more photos before exhausting their batteries.

Special note: The measurement standard for battery life stipulates that if a camera has an internal flash, it must be used for 50% of photos taken. For this reason, comparisons of one camera with an internal flash to another without will not be comparable

760 vs 460 shots
Capture more photos
Higher max flash sync
1/200 vs 1/125 sec
Reduce the effect of ambient light in flash shots
Optional anti-aliasing filter
Optional vs None
Lets you choose sharper photos or reduced moiré
Higher extended ISO
204800 vs 102400 ISO
Higher extended ISO can give more low-light flexibility

Fujifilm GFX 100S advantages over Pentax K-1

Larger sensor
Medium format vs 35mm
More sensor area. Bigger is (generally) better.
Shoot 4K video
4K (DCI) vs 1080p
Make sure you have a fast computer
Touchscreen
Touch vs No touch
Interact with your camera just like your smartphone
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
Newer
4 years vs 9 years old
Newer cameras often support more advanced features
Higher-res screen
787k vs 346k pixels
More detail on the screen lets you judge focus and composition
More viewfinder magnification
0.86x vs 0.70x
Get a bigger view of the scene through the eye-level viewfinder
More pixels
102.0 vs 36.4 megapixels
Higher resolution photos
Longer exposure
3600 vs 30 sec
Long exposures for night shots
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
Top deck display
Both provide
Check settings with a screen on top of the camera
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
Dual card slots
Both provide
Gives you more storage flexibility
Headphone jack
Both provide
Monitor audio recording while you shoot video
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
Internal flash
Neither provide
Useful in a pinch for fill flash
Slow-motion videos
Neither provide
Shoot slow-motion videos

User reviews

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Read K-1 User Reviews

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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
Read our Pentax K-1 Review

We haven’t finished our review of the Fujifilm GFX 100S, but we have extensive sample photos and a hands-on report.
Read our Fujifilm GFX 100S Shooter's Report

The Competition

Compared to Canon 5DS

Pentax K-1

Canon 5DS

$1800
35mm

Focus peaking
In-Camera Image Stabilization

$1549
35mm

Fast startup
More cross-type AF points

Compare Pentax K-1 vs Canon 5DS

Fujifilm GFX 100S

Canon 5DS

$5499
Medium format

Focus peaking
Larger sensor

$1549
35mm

Less expensive
Longer stills battery life

Compare Fujifilm GFX 100S vs Canon 5DS

Compared to Canon 5DS R

Pentax K-1

Canon 5DS R

$1800
35mm

Focus peaking
In-Camera Image Stabilization

$1499
35mm

Fast startup
More cross-type AF points

Compare Pentax K-1 vs Canon 5DS R

Fujifilm GFX 100S

Canon 5DS R

$5499
Medium format

Focus peaking
Larger sensor

$1499
35mm

Less expensive
Longer stills battery life

Compare Fujifilm GFX 100S vs Canon 5DS R

Compared to Pentax K-1 II

Pentax K-1

Pentax K-1 II

$1800
35mm

$1697
35mm

Higher extended ISO

Compare Pentax K-1 vs Pentax K-1 II

Fujifilm GFX 100S

Pentax K-1 II

$5499
Medium format

Larger sensor
Shoot 4K video

$1697
35mm

Less expensive
Bigger pixels

Compare Fujifilm GFX 100S vs Pentax K-1 II

Compared to Hasselblad X1D II

Pentax K-1

Hasselblad X1D II

$1800
35mm

In-Camera Image Stabilization
Tiltable Screen

$5750
Medium format

Larger sensor
Touchscreen

Compare Pentax K-1 vs Hasselblad X1D II

Fujifilm GFX 100S

Hasselblad X1D II

$5499
Medium format

Less expensive
In-Camera Image Stabilization

$5750
Medium format

Bigger pixels
Built-in GPS

Compare Fujifilm GFX 100S vs Hasselblad X1D II

Compared to Fujifilm GFX 50S II

Pentax K-1

Fujifilm GFX 50S II

$1800
35mm

High resolution composite
Built-in GPS

$3766
Medium format

Larger sensor
Touchscreen

Compare Pentax K-1 vs Fujifilm GFX 50S II

Fujifilm GFX 100S

Fujifilm GFX 50S II

$5499
Medium format

Shoot 4K video
More viewfinder magnification

$3766
Medium format

Bigger pixels

Compare Fujifilm GFX 100S vs Fujifilm GFX 50S II

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