Pentax 645Z vs Pentax K-1

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Pentax 645Z vs Pentax K-1

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Medium format 1,436.6mm²
51.4 megapixels
ISO 100 - 204,800

Go in depth with our full Pentax 645Z Review.
How does it shoot? Pentax 645Z in the real world.
See real-world photos taken with the 645Z.
Compare Pentax 645Z image quality against competitors.
What’s the bottom line? Read our Pentax 645Z conclusion.

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.

Succeeded by the Pentax K-1 II
Compare K-1 vs K-1 II
Compare Pentax 645Z vs Pentax K-1 II

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Differences

Pentax 645Z advantages over Pentax K-1

Larger sensor
Medium format vs 35mm
More sensor area. Bigger is (generally) better.
Higher effective ISO

Higher effective ISO

Maximum effective ISO is an estimate of the highest sensitivity at which a camera can capture excellent quality photos.

Cameras with higher effective ISO will be better choices for indoor photography, night shooting, and indoor sports photography, especially if you intend to make large prints.

You can learn more at our glossary entry.

Maximum effective ISO test data courtesy of DxO Mark.
645Z test data on DxO Mark K-1 test data on DxO Mark

4,505 vs 3,280 iso
Take photos in low light with less noise
More viewfinder magnification
0.78x vs 0.70x
Get a bigger view of the scene through the eye-level viewfinder
More pixels
51.4 vs 36.4 megapixels
Higher resolution photos

Pentax K-1 advantages over Pentax 645Z

Lens selection
Excellent vs Limited
Better lens selection gives you more options
In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
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
Thinner
85 mm vs 123 mm
Thinner
Higher max flash sync
1/200 vs 1/125 sec
Reduce the effect of ambient light in flash shots
Lighter weight
1015g vs 1555g
Lighter weight
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 JPEG shooting
4.6 fps vs 3.1 fps
Faster JPEG shooting (burst mode)
Bigger JPEG buffer
74 vs 12 shots
Take more JPEG shots before waiting (burst mode)
Faster RAW shooting
4.6 fps vs 3.1 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
17 vs 10 shots
Larger buffer for RAW shots (burst mode)
Faster shutter
1/8000 vs 1/4000 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
Tiltable Screen
Both provide
Tilt the screen for shooting flexbility
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
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
Touchscreen
Neither provide
Interact with your camera just like your smartphone
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

Amazon
Adorama
Read 645Z User Reviews

Amazon
Adorama
Read K-1 User Reviews

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Review Excerpt

Phenomenal resolution and detail; Great high ISO performance; Rugged, weather-sealed body; Huge, bright viewfinder; Fast autofocus works well in low light; Swift performance for a medium-format camera; Good battery life; Shoots Full HD video
Quite bulky compared to an APS-C or full-frame DSLR; Autofocus points clustered near center of frame; Most lenses aren't weather-sealed or optimized for digital; Prone to aliasing artifacts (but so are most high-end cameras these days); Attracts a lot of attention from passers-by
Read our Pentax 645Z Review

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

The Competition

Compared to Pentax 645D

Pentax 645Z

Pentax 645D

$4845
Medium format

Focus peaking
Tiltable Screen

$3599
Medium format

Fast startup
Longer stills battery life

Compare Pentax 645Z vs Pentax 645D

Pentax K-1

Pentax 645D

$1800
35mm

Lens selection
Focus peaking

$3599
Medium format

Larger sensor
Bigger pixels

Compare Pentax K-1 vs Pentax 645D

Compared to Leica S (Typ 006)

Pentax 645Z

Leica S (Typ 006)

$4845
Medium format

Focus peaking
Tiltable Screen

$10535
Medium format

Thinner
More viewfinder magnification

Compare Pentax 645Z vs Leica S (Typ 006)

Pentax K-1

Leica S (Typ 006)

$1800
35mm

Lens selection
Focus peaking

$10535
Medium format

Larger sensor
Bigger pixels

Compare Pentax K-1 vs Leica S (Typ 006)

Compared to Leica S-E (Typ 006)

Pentax 645Z

Leica S-E (Typ 006)

$4845
Medium format

Focus peaking
Tiltable Screen

$16900
Medium format

Built-in GPS
Thinner

Compare Pentax 645Z vs Leica S-E (Typ 006)

Pentax K-1

Leica S-E (Typ 006)

$1800
35mm

Lens selection
Focus peaking

$16900
Medium format

Larger sensor
Bigger pixels

Compare Pentax K-1 vs Leica S-E (Typ 006)

Compared to Canon 5DS R

Pentax 645Z

Canon 5DS R

$4845
Medium format

Focus peaking
Larger sensor

$1849
35mm

Lens selection
Less expensive

Compare Pentax 645Z vs Canon 5DS R

Pentax K-1

Canon 5DS R

$1800
35mm

Focus peaking
In-Camera Image Stabilization

$1849
35mm

Fast startup
More cross-type AF points

Compare Pentax K-1 vs Canon 5DS R

Compared to Pentax K-1 II

Pentax 645Z

Pentax K-1 II

$4845
Medium format

Larger sensor
More viewfinder magnification

$1747
35mm

Lens selection
Less expensive

Compare Pentax 645Z vs Pentax K-1 II

Pentax K-1

Pentax K-1 II

$1800
35mm

$1747
35mm

Higher extended ISO

Compare Pentax K-1 vs Pentax K-1 II

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