Canon R5 vs Pentax K-3 III

Cameras
Compare Cameras
Canon R5 vs Pentax K-3 III

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

Go in depth with our full Canon R5 Review.
See real-world photos taken with the R5.

APS-C 361.2mm²
25.7 megapixels
ISO 100 - 1,600,000

Go in depth with our full Pentax K-3 III Review.
See real-world photos taken with the K-3 III.

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Differences

Canon R5 advantages over Pentax K-3 III

Tilt-swivel screen
Tilt-swivel vs none
Tilt and swivel the screen for maximum shooting flexibility
Larger sensor
35mm vs APS-C
More sensor area. Bigger is (generally) better.
Bigger pixels
~ 4.39 vs 3.76 microns
Better low-light and dynamic range (all else equal)
On-sensor phase detect
Yes vs No
Usually improves live view and video AF performance
More pixels
45.0 vs 25.7 megapixels
Higher resolution photos
Slow-motion videos
Yes vs No
Shoot slow-motion videos

Pentax K-3 III advantages over Canon R5

Less expensive
$2344 vs $4299
Save money for lenses or accessories
High resolution composite
Yes vs No
Combine multiple shots to form a super hi-res version
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

800 vs 320 shots
Capture more photos
More viewfinder magnification
1.05x vs 0.76x
Get a bigger view of the scene through the eye-level viewfinder
Optional anti-aliasing filter
Optional vs Fixed
Lets you choose sharper photos or reduced moiré
Higher extended ISO
1600000 vs 102400 ISO
Higher extended ISO can give more low-light flexibility

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
Shoot 4K video
Both provide
Make sure you have a fast computer
Touchscreen
Both provide
Interact with your camera just like your smartphone
Built-in Wi-Fi
Both provide
Share your photos wirelessly
Built-in Bluetooth
Both provide
Always-on wireless connectivity
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

In-camera panoramas
Neither provide
Stitches multiple shots into a panoramic photo
NFC
Neither provide
Simplifies pairing your camera with supported phones
Built-in GPS
Neither provide
Geotag your photos
Internal flash
Neither provide
Useful in a pinch for fill flash

User reviews

Amazon
Adorama
Read R5 User Reviews

Amazon
Adorama
Read K-3 III User Reviews

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Buy the Canon R5

Body Only

Body Only
Kit with RF 24-105mm f/4 L

Your purchases support this site

Buy the Pentax K-3 III

Body Only

Body Only
Kit with 20-40mm F2.8-4 Lens
Kit with 55-300mm f/4.5-6.3 Lens

All K-3 III Deals

Review Excerpt

We haven’t finished our review of the Canon R5, but we have extensive sample photos and a hands-on report.
Read our Canon R5 Shooter's Report

We haven’t finished our review of the Pentax K-3 III, but we have extensive sample photos and a hands-on report.
See our Pentax K-3 III First Shots

The Competition

Compared to Pentax KP

Canon R5

Pentax KP

$3549
35mm

Larger sensor
Tilt-swivel screen

$999
APS-C

Less expensive
High resolution composite

Compare Canon R5 vs Pentax KP

Pentax K-3 III

Pentax KP

$1847
APS-C

Shoot 4K video
Touchscreen

$999
APS-C

Less expensive
Tiltable Screen

Compare Pentax K-3 III vs Pentax KP

Compared to Sony A7R IV

Canon R5

Sony A7R IV

$3549
35mm

Tilt-swivel screen
Bigger pixels

$3287
35mm

Less expensive
High resolution composite

Compare Canon R5 vs Sony A7R IV

Pentax K-3 III

Sony A7R IV

$1847
APS-C

Lens selection
Less expensive

$3287
35mm

Larger sensor
Tiltable Screen

Compare Pentax K-3 III vs Sony A7R IV

Compared to Canon 90D

Canon R5

Canon 90D

$3549
35mm

Focus peaking
Larger sensor

$1199
APS-C

Less expensive
Longer stills battery life

Compare Canon R5 vs Canon 90D

Pentax K-3 III

Canon 90D

$1847
APS-C

Focus peaking
In-Camera Image Stabilization

$1199
APS-C

Less expensive
Tilt-swivel screen

Compare Pentax K-3 III vs Canon 90D

Compared to Nikon Z7 II

Canon R5

Nikon Z7 II

$3549
35mm

Tilt-swivel screen
More telephoto lens reach

$2730
35mm

Less expensive
Lacks anti-aliasing filter

Compare Canon R5 vs Nikon Z7 II

Pentax K-3 III

Nikon Z7 II

$1847
APS-C

Less expensive
High resolution composite

$2730
35mm

Larger sensor
Bigger pixels

Compare Pentax K-3 III vs Nikon Z7 II

Compared to Sony A1

Canon R5

Sony A1

$3549
35mm

Less expensive
Tilt-swivel screen

$6499
35mm

Slower slow-motion
NFC

Compare Canon R5 vs Sony A1

Pentax K-3 III

Sony A1

$1847
APS-C

Lens selection
Less expensive

$6499
35mm

Larger sensor
Tiltable Screen

Compare Pentax K-3 III vs Sony A1

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