Pentax 645Z vs Canon 5D Mark IV

Cameras
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Pentax 645Z vs Canon 5D Mark IV

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 864.0mm²
30.4 megapixels
ISO 100 - 32,000

Go in depth with our full Canon 5D Mark IV Review.
How does it shoot? Canon 5D Mark IV in the real world.
See real-world photos taken with the 5D Mark IV.
Compare Canon 5D Mark IV image quality against competitors.
What’s the bottom line? Read our Canon 5D Mark IV conclusion.

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Differences

Pentax 645Z advantages over Canon 5D Mark IV

Focus peaking
Peaker vs Non-peaker
Your camera will highlight what's in focus
Larger sensor
Medium format vs 35mm
More sensor area. Bigger is (generally) better.
Tiltable Screen
Tiltable vs Fixed
Tilt the screen for shooting flexbility
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 5D Mark IV test data on DxO Mark

4,505 vs 2,995 iso
Take photos in low light with less noise
More viewfinder magnification
0.78x vs 0.71x
Get a bigger view of the scene through the eye-level viewfinder
More pixels
51.4 vs 30.4 megapixels
Higher resolution photos
Lacks anti-aliasing filter
No Filter vs Filter
Enjoy sharper photos
Higher extended ISO
204800 vs 102400 ISO
Higher extended ISO can give more low-light flexibility

Canon 5D Mark IV advantages over Pentax 645Z

Lens selection
Excellent vs Limited
Better lens selection gives you more options
Less expensive
$3249 vs $4694*
Save money for lenses or accessories
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
Fast startup
~0.50 vs 1.5 sec
Faster startup lets you catch the moment
Built-in Wi-Fi
Wi-Fi vs None
Share your photos wirelessly
NFC
Yes vs No
Simplifies pairing your camera with supported phones
Built-in GPS
GPS vs None
Geotag your photos
On-sensor phase detect
Yes vs No
Usually improves live view and video AF performance
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

900 vs 650 shots
Capture more photos
Thinner
75 mm vs 123 mm
Thinner
More cross-type AF points
41 vs 25
Cross-type AF points improve autofocus performance
Higher max flash sync
1/200 vs 1/125 sec
Reduce the effect of ambient light in flash shots
Lighter weight
890g vs 1555g
Lighter weight
Higher-res screen
540k vs 346k pixels
More detail on the screen lets you judge focus and composition
More AF points
61 vs 27
More AF points improve autofocus
Headphone jack
Yes vs No
Monitor audio recording while you shoot video
Has anti-aliasing filter
Filter vs No Filter
Reduces unsightly moiré in photos
Faster JPEG shooting
7.0 fps vs 3.1 fps
Faster JPEG shooting (burst mode)
Bigger JPEG buffer
Unlimited vs 12 shots
Take more JPEG shots before waiting (burst mode)
Faster RAW shooting
7.0 fps vs 3.1 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
19 vs 10 shots
Larger buffer for RAW shots (burst mode)
Slow-motion videos
Yes vs No
Shoot slow-motion videos
Faster shutter
1/8000 vs 1/4000 sec
Shoot wide open in bright light

Similarities

Common Strengths

Eye-level viewfinder
Both provide
You'll be able to frame photos even when the sun is out
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
In-Camera Image Stabilization
Neither provide
Reduces the effects of camera shake at slower shutter speeds
In-camera panoramas
Neither provide
Stitches multiple shots into a panoramic photo
Built-in Bluetooth
Neither provide
Always-on wireless connectivity
Internal flash
Neither provide
Useful in a pinch for fill flash

User reviews

Amazon
Adorama
Read 645Z User Reviews

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Buy the Pentax 645Z

Body Only

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Buy the Canon 5D Mark IV

Body Only

Body Only
Kit with 24-105mm Lens
Kit with 24-70mm Lens

All 5D Mark IV Deals

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

Superb image quality from RAW files; Improved dynamic range; Excellent high ISO performance; Fast 7fps burst rate with unlimited JPEG buffer; High-quality cinema 4K video; Built-in Wi-Fi; Dual Pixel CMOS AF is very good.
JPEG files look soft at default settings; 1/200s flash sync; 4K video codec is cumbersome; 29:59 continuous video recording limit.
Read our Canon 5D Mark IV Review

The Competition

Compared to Canon 5D Mark III

Pentax 645Z

Canon 5D Mark III

$4845
Medium format

Focus peaking
Larger sensor

$2139
35mm

Lens selection
Less expensive

Compare Pentax 645Z vs Canon 5D Mark III

Canon 5D Mark IV

Canon 5D Mark III

$2499
35mm

Shoot 4K video
Touchscreen

$2139
35mm

Less expensive
Bigger pixels

Compare Canon 5D Mark IV vs Canon 5D Mark III

Compared to Nikon D810

Pentax 645Z

Nikon D810

$4845
Medium format

Focus peaking
Larger sensor

$2346
35mm

Lens selection
Less expensive

Compare Pentax 645Z vs Nikon D810

Canon 5D Mark IV

Nikon D810

$2499
35mm

Shoot 4K video
Touchscreen

$2346
35mm

Longer stills battery life
Internal flash

Compare Canon 5D Mark IV vs Nikon D810

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

Canon 5D Mark IV

Pentax 645D

$2499
35mm

Lens selection
Shoot 4K video

$3599
Medium format

Larger sensor
More viewfinder magnification

Compare Canon 5D Mark IV 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)

Canon 5D Mark IV

Leica S (Typ 006)

$2499
35mm

Lens selection
Shoot 4K video

$10535
Medium format

Larger sensor
More viewfinder magnification

Compare Canon 5D Mark IV 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)

Canon 5D Mark IV

Leica S-E (Typ 006)

$2499
35mm

Lens selection
Shoot 4K video

$16900
Medium format

Larger sensor
More viewfinder magnification

Compare Canon 5D Mark IV vs Leica S-E (Typ 006)

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