Pentax K-3 vs Canon 1DX Mark II

Cameras
Compare Cameras
Pentax K-3 vs Canon 1DX Mark II

Leave Feedback

APS-C 366.6mm²
24.4 megapixels
ISO 100 - 51,200

Go in depth with our full Pentax K-3 Review.
How does it shoot? Pentax K-3 in the real world.
See real-world photos taken with the K-3.
Compare Pentax K-3 image quality against competitors.
What’s the bottom line? Read our Pentax K-3 conclusion.

35mm 864.0mm²
20.2 megapixels
ISO 100 - 51,200

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

Succeeded by the Pentax K-3 II
Compare K-3 vs K-3 II

Succeeded by the Canon 1DX Mark III
Compare 1DX Mark II vs 1DX Mark III

Compare PENTAX K-3 II vs CANON 1DX MARK III

Buy From

Differences

Pentax K-3 advantages over Canon 1DX Mark II

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
Internal flash
Internal flash vs None
Useful in a pinch for fill flash
More pixels
24.4 vs 20.2 megapixels
Higher resolution photos
Optional anti-aliasing filter
Optional vs Fixed
Lets you choose sharper photos or reduced moiré

Canon 1DX Mark II advantages over Pentax K-3

Larger sensor
35mm vs APS-C
More sensor area. Bigger is (generally) better.
Bigger pixels
~ 6.58 vs 3.91 microns
Better low-light and dynamic range (all else equal)
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
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.
1DX Mark II test data on DxO Mark K-3 test data on DxO Mark

3,207 vs 1,216 iso
Take photos in low light with less noise
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

1210 vs 560 shots
Capture more photos
More cross-type AF points
41 vs 25
Cross-type AF points improve autofocus performance
More dots on screen
1620k vs 1037k dots
Can mean greater resolution or a brighter screen
More viewfinder magnification
0.76x vs 0.63x
Get a bigger view of the scene through the eye-level viewfinder
More AF points
61 vs 27
More AF points improve autofocus
Faster JPEG shooting
14.0 fps vs 7.1 fps
Faster JPEG shooting (burst mode)
Bigger JPEG buffer
Unlimited vs 75 shots
Take more JPEG shots before waiting (burst mode)
Faster RAW shooting
14.1 fps vs 7.1 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
Unlimited vs 24 shots
Larger buffer for RAW shots (burst mode)
Slow-motion videos
Yes vs No
Shoot slow-motion videos
Higher extended ISO
409600 vs 51200 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
In-camera panoramas
Neither provide
Stitches multiple shots into a panoramic photo
Tiltable Screen
Neither provide
Tilt the screen for shooting flexbility
Built-in Wi-Fi
Neither provide
Share your photos wirelessly
NFC
Neither provide
Simplifies pairing your camera with supported phones
Built-in Bluetooth
Neither provide
Always-on wireless connectivity

User reviews

Amazon
Adorama
Read K-3 User Reviews

Buy From

Your purchases support this site

Buy the Pentax K-3

Body Only

Body Only
Kit with 18-135mm Lens

All K-3 Deals

Your purchases support this site

Buy the Canon 1DX Mark II

Body Only

Body Only
Premium Kit

All 1DX Mark II Deals

Review Excerpt

Top-notch image quality; Great ergonomics in a compact body; Unique on-demand low-pass filtering; Broad sensitivity range; Large and bright viewfinder for an APS-C camera; Dual card slots; Optional Wi-Fi remote control
AE Lock button is poorly located; Below-average battery life for a DSLR; Rather dated-looking menu system; Requires a different battery grip accessory than its predecessors; Less third-party support than some rivals
Read our Pentax K-3 Review

Excellent image quality, especially from RAWs; Fantastic high ISO performance; Fast autofocus with great tracking performance; 14fps burst rate; Amazing buffer capacity; 4K 60p video; Robust build quality.
Very heavy, bulky and expensive; Dual memory card slots use different formats; 29:59 continuous video recording limit; Touchscreen feels underutilized.
Read our Canon 1DX Mark II Review

The Competition

Compared to Nikon D7100

Pentax K-3

Nikon D7100

$699
APS-C

Focus peaking
In-Camera Image Stabilization

$745
APS-C

Fast startup
Longer stills battery life

Compare Pentax K-3 vs Nikon D7100

Canon 1DX Mark II

Nikon D7100

$2999
35mm

Larger sensor
Bigger pixels

$745
APS-C

Less expensive
Fast startup

Compare Canon 1DX Mark II vs Nikon D7100

Compared to Nikon D5300

Pentax K-3

Nikon D5300

$699
APS-C

Focus peaking
In-Camera Image Stabilization

$549
APS-C

Tilt-swivel screen
Fast startup

Compare Pentax K-3 vs Nikon D5300

Canon 1DX Mark II

Nikon D5300

$2999
35mm

Larger sensor
Bigger pixels

$549
APS-C

Less expensive
Tilt-swivel screen

Compare Canon 1DX Mark II vs Nikon D5300

Compared to Nikon D4S

Pentax K-3

Nikon D4S

$699
APS-C

Focus peaking
In-Camera Image Stabilization

$5399
35mm

Larger sensor
Bigger pixels

Compare Pentax K-3 vs Nikon D4S

Canon 1DX Mark II

Nikon D4S

$2999
35mm

Less expensive
Shoot 4K video

$5399
35mm

Fast startup
Longer stills battery life

Compare Canon 1DX Mark II vs Nikon D4S

Compared to Nikon D7200

Pentax K-3

Nikon D7200

$699
APS-C

Focus peaking
In-Camera Image Stabilization

$1016
APS-C

Fast startup
Built-in Wi-Fi

Compare Pentax K-3 vs Nikon D7200

Canon 1DX Mark II

Nikon D7200

$2999
35mm

Larger sensor
Bigger pixels

$1016
APS-C

Less expensive
Fast startup

Compare Canon 1DX Mark II vs Nikon D7200

Compared to Nikon D5

Pentax K-3

Nikon D5

$699
APS-C

Focus peaking
In-Camera Image Stabilization

$4893
35mm

Larger sensor
Bigger pixels

Compare Pentax K-3 vs Nikon D5

Canon 1DX Mark II

Nikon D5

$2999
35mm

Higher effective ISO
Built-in GPS

$4893
35mm

Fast startup
Longer stills battery life

Compare Canon 1DX Mark II vs Nikon D5

Compare Other Cameras?