Canon 5D Mark III vs Pentax K-1

Cameras
Compare Cameras
Canon 5D Mark III vs Pentax K-1

Leave Feedback

35mm 864.0mm²
22.3 megapixels
ISO 100 - 25,600

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

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

Compare CANON 5D MARK IV vs PENTAX K-1 II

Buy From

Differences

Canon 5D Mark III advantages over Pentax K-1

Bigger pixels
~ 6.25 vs 4.88 microns
Better low-light and dynamic range (all else equal)
Fast startup
~0.50 vs 1.2 sec
Faster startup lets you catch the moment
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

950 vs 760 shots
Capture more photos
More cross-type AF points
41 vs 25
Cross-type AF points improve autofocus performance
More AF points
61 vs 33
More AF points improve autofocus
Faster JPEG shooting
6.0 fps vs 4.6 fps
Faster JPEG shooting (burst mode)
Faster RAW shooting
6.0 fps vs 4.6 fps
Faster RAW shooting in burst mode

Pentax K-1 advantages over Canon 5D Mark III

Focus peaking
Peaker vs Non-peaker
Your camera will highlight what's in focus
In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
Tiltable Screen
Tiltable vs Fixed
Tilt the screen for shooting flexbility
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
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.
K-1 test data on DxO Mark 5D Mark III test data on DxO Mark

3,280 vs 2,293 iso
Take photos in low light with less noise
More dynamic range

More dynamic range

Cameras with more dynamic range allow you to take photos with dramatic differences in highlight and shadow areas while retaining detail in both.

Think of a brilliant sunset on a rocky beach: Bright sunset in the background, with dark rocks in the foreground. High dynamic range means more of the extremes will be faithfully reproduced.

Dynamic range test data courtesy of DxO Mark.
K-1 test data on DxO Mark 5D Mark III test data on DxO Mark

14.6 vs 11.7 evs
Retain detail in highlight and shadows
Built-in GPS
GPS vs None
Geotag your photos
Newer
9 years vs 13 years old
Newer cameras often support more advanced features
More pixels
36.4 vs 22.3 megapixels
Higher resolution photos
Optional anti-aliasing filter
Optional vs Fixed
Lets you choose sharper photos or reduced moiré
Higher extended ISO
204800 vs 102400 ISO
Higher extended ISO can give more low-light flexibility

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
Pentaprism viewfinder
Both provide
Much better viewfinder picture fidelity
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
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 K-1 User Reviews

Buy From

Your purchases support this site

Buy the Canon 5D Mark III

Body Only

Body Only
Kit with 24-105mm f/4 lens
Kit with 24-70mm Lens

All 5D Mark III Deals

Your purchases support this site

Buy the Pentax K-1

Review Excerpt

Superb still and video image quality; Powerful, fast, and accurate AF system with loads of cross-type points, loads of configurability and great frame coverage; Rugged, weather-sealed body with great control layout and user-interface configurability.
Dynamic range is limited by noise in deep shadows; Somewhat heavy-handed noise suppression and sharpening at default settings. (Shooting RAW avoids both.); No AF illuminator.
Read our Canon 5D Mark III 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 Canon 6D

Canon 5D Mark III

Canon 6D

$2079
35mm

More cross-type AF points
Less shutter lag

$1699
35mm

Less expensive
Built-in Wi-Fi

Compare Canon 5D Mark III vs Canon 6D

Pentax K-1

Canon 6D

$1800
35mm

Focus peaking
In-Camera Image Stabilization

$1699
35mm

Bigger pixels
Fast startup

Compare Pentax K-1 vs Canon 6D

Compared to Canon 5D Mark IV

Canon 5D Mark III

Canon 5D Mark IV

$2079
35mm

Less expensive
Bigger pixels

$2349
35mm

Shoot 4K video
Touchscreen

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

Pentax K-1

Canon 5D Mark IV

$1800
35mm

Focus peaking
In-Camera Image Stabilization

$2349
35mm

Shoot 4K video
Touchscreen

Compare Pentax K-1 vs Canon 5D Mark IV

Compared to Sony A850

Canon 5D Mark III

Sony A850

$2079
35mm

Lens selection
Higher effective ISO

$2219
35mm

In-Camera Image Stabilization

Compare Canon 5D Mark III vs Sony A850

Pentax K-1

Sony A850

$1800
35mm

Lens selection
Focus peaking

$2219
35mm

Bigger pixels
Fast startup

Compare Pentax K-1 vs Sony A850

Compared to Nikon D800E

Canon 5D Mark III

Nikon D800E

$2079
35mm

Bigger pixels
More cross-type AF points

$2212
35mm

Fast startup
Higher effective ISO

Compare Canon 5D Mark III vs Nikon D800E

Pentax K-1

Nikon D800E

$1800
35mm

Less expensive
Focus peaking

$2212
35mm

Fast startup
Internal flash

Compare Pentax K-1 vs Nikon D800E

Compared to Sony A99

Canon 5D Mark III

Sony A99

$2079
35mm

Lens selection
Fast startup

$1998
35mm

Focus peaking
Tilt-swivel screen

Compare Canon 5D Mark III vs Sony A99

Pentax K-1

Sony A99

$1800
35mm

Lens selection
Less expensive

$1998
35mm

Tilt-swivel screen
Bigger pixels

Compare Pentax K-1 vs Sony A99

Compare Other Cameras?