Canon R6 vs Pentax K-3 III
61 Imaging
73 Features
90 Overall
79


58 Imaging
71 Features
86 Overall
77
Canon R6 vs Pentax K-3 III Key Specs
(Full Review)
- 20MP - Full frame Sensor
- 3" Fully Articulated Display
- ISO 100 - 102400 (Expand to 204800)
- Sensor based 5-axis Image Stabilization
- No Anti-Alias Filter
- 1/8000s Maximum Shutter
- 3840 x 2160 video
- Canon RF Mount
- 680g - 138 x 98 x 88mm
- Launched July 2020
- New Model is Canon R6 II
(Full Review)
- 26MP - APS-C Sensor
- 3.2" Fixed Display
- ISO 100 - 1600000
- Sensor based Image Stabilization
- No Anti-Alias Filter
- 1/8000s Max Shutter
- 3840 x 2160 video
- Pentax KAF2 Mount
- 820g - 135 x 104 x 74mm
- Revealed March 2021

Canon R6 vs Pentax K-3 III Overview
Following is a extensive overview of the Canon R6 versus Pentax K-3 III, one is a Pro Mirrorless and the other is a Advanced DSLR by competitors Canon and Pentax. There exists a big gap among the resolutions of the R6 (20MP) and K-3 III (26MP) and the R6 (Full frame) and K-3 III (APS-C) enjoy different sensor dimensions.

The R6 was manufactured 8 months before the K-3 III which means that they are of a similar generation. Both of these cameras offer different body type with the Canon R6 being a SLR-style mirrorless camera and the Pentax K-3 III being a Mid-size SLR camera.
Before diving through a complete comparison, below is a simple synopsis of how the R6 matches up versus the K-3 III with respect to portability, imaging, features and an overall score.

Canon R6 vs Pentax K-3 III Gallery
Following is a sample of the gallery pics for Canon EOS R6 and Pentax K-3 Mark III. The entire galleries are viewable at Canon R6 Gallery and Pentax K-3 III Gallery.
Reasons to pick Canon R6 over the Pentax K-3 III
R6 | K-3 III | |||
---|---|---|---|---|
Display type | Fully Articulated | ![]() | Fixed | Fully Articulating display |
Selfie screen | ![]() | Easy selfies |
Reasons to pick Pentax K-3 III over the Canon R6
K-3 III | R6 | |||
---|---|---|---|---|
Revealed | March 2021 | ![]() | July 2020 | More modern by 8 months |
Display sizing | 3.2" | ![]() | 3" | Larger display (+0.2") |
Common features in the Canon R6 and Pentax K-3 III
R6 | K-3 III | |||
---|---|---|---|---|
Focus manually | ![]() | Dial accurate focusing | ||
Display resolution | 1620k | ![]() | 1620k | Exact same display resolution |
Touch friendly display | ![]() | Easily navigate |
Canon R6 vs Pentax K-3 III Physical Comparison
For anybody who is going to carry around your camera frequently, you'll need to take into account its weight and size. The Canon R6 has got physical measurements of 138mm x 98mm x 88mm (5.4" x 3.9" x 3.5") having a weight of 680 grams (1.50 lbs) while the Pentax K-3 III has specifications of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") with a weight of 820 grams (1.81 lbs).
Check the Canon R6 versus Pentax K-3 III in the latest Camera with Lens Size Comparison Tool.
Always remember, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are utilising at that time. Here is the front view over all size comparison of the R6 vs the K-3 III.

Using dimensions and weight, the portability score of the R6 and K-3 III is 61 and 58 respectively.

Canon R6 vs Pentax K-3 III Sensor Comparison
Typically, it is very hard to visualize the gap in sensor sizes merely by viewing specs. The picture below may give you a much better sense of the sensor sizing in the R6 and K-3 III.
All in all, both cameras enjoy different resolutions and different sensor sizes. The R6 featuring a larger sensor is going to make shooting bokeh simpler and the Pentax K-3 III will result in more detail due to its extra 6 Megapixels. Greater resolution will also make it easier to crop images far more aggressively. The more aged R6 will be disadvantaged in sensor technology.

Canon R6 vs Pentax K-3 III Screen and ViewFinder


Photography Type Scores
Portrait Comparison

Street Comparison

Sports Comparison

Travel Comparison

Landscape Comparison

Vlogging Comparison

Canon R6 vs Pentax K-3 III Specifications
Canon EOS R6 | Pentax K-3 Mark III | |
---|---|---|
General Information | ||
Brand Name | Canon | Pentax |
Model type | Canon EOS R6 | Pentax K-3 Mark III |
Class | Pro Mirrorless | Advanced DSLR |
Launched | 2020-07-09 | 2021-03-31 |
Body design | SLR-style mirrorless | Mid-size SLR |
Sensor Information | ||
Processor Chip | Digic X | - |
Sensor type | CMOS | CMOS |
Sensor size | Full frame | APS-C |
Sensor measurements | 36 x 24mm | 23 x 15.5mm |
Sensor area | 864.0mm² | 356.5mm² |
Sensor resolution | 20MP | 26MP |
Anti alias filter | ||
Aspect ratio | 1:1, 4:3, 3:2 and 16:9 | 3:2 |
Highest Possible resolution | 5472 x 3648 | 6192 x 4128 |
Maximum native ISO | 102400 | 1600000 |
Maximum enhanced ISO | 204800 | - |
Lowest native ISO | 100 | 100 |
RAW format | ||
Lowest enhanced ISO | 50 | - |
Autofocusing | ||
Focus manually | ||
Touch to focus | ||
Continuous autofocus | ||
Single autofocus | ||
Tracking autofocus | ||
Selective autofocus | ||
Center weighted autofocus | ||
Autofocus multi area | ||
Autofocus live view | ||
Face detect autofocus | ||
Contract detect autofocus | ||
Phase detect autofocus | ||
Total focus points | 6072 | 101 |
Cross type focus points | - | 25 |
Lens | ||
Lens mount type | Canon RF | Pentax KAF2 |
Total lenses | 17 | 156 |
Focal length multiplier | 1 | 1.6 |
Screen | ||
Range of display | Fully Articulated | Fixed Type |
Display diagonal | 3 inch | 3.2 inch |
Display resolution | 1,620 thousand dot | 1,620 thousand dot |
Selfie friendly | ||
Liveview | ||
Touch operation | ||
Viewfinder Information | ||
Viewfinder type | Electronic | Optical (pentaprism) |
Viewfinder resolution | 3,690 thousand dot | - |
Viewfinder coverage | 100% | 100% |
Viewfinder magnification | 0.76x | 0.7x |
Features | ||
Minimum shutter speed | 30s | 30s |
Fastest shutter speed | 1/8000s | 1/8000s |
Fastest quiet shutter speed | 1/8000s | - |
Continuous shutter speed | 12.0 frames/s | 12.0 frames/s |
Shutter priority | ||
Aperture priority | ||
Expose Manually | ||
Exposure compensation | Yes | Yes |
Change white balance | ||
Image stabilization | ||
Inbuilt flash | ||
Flash distance | no built-in flash | no built-in flash |
Flash modes | no built-in flash | Auto, Auto + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow- speed Sync, Slow-speed Sync + Red-eye, P-TTL, Contrast-control-sync, High-speed sync, Wireless sync |
External flash | ||
Auto exposure bracketing | ||
White balance bracketing | ||
Fastest flash sync | - | 1/200s |
Exposure | ||
Multisegment | ||
Average | ||
Spot | ||
Partial | ||
AF area | ||
Center weighted | ||
Video features | ||
Video resolutions | 3840x2160 (60p/30p/23.98p) |1920x1080 (120p/60p/50p/30p/25p/24p/23.98p) | 3840 x 2160 @ 30p, MOV, H.264, Linear PCM3840 x 2160 @ 24p, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 24p, MOV, H.264, Linear PCM |
Maximum video resolution | 3840x2160 | 3840x2160 |
Video data format | MPEG-4, H.264, H.265 | MPEG-4, H.264 |
Microphone input | ||
Headphone input | ||
Connectivity | ||
Wireless | Built-In | Built-In |
Bluetooth | ||
NFC | ||
HDMI | ||
USB | Yes | USB 3.2 Gen 1 (5 GBit/sec) |
GPS | None | None |
Physical | ||
Environmental seal | ||
Water proofing | ||
Dust proofing | ||
Shock proofing | ||
Crush proofing | ||
Freeze proofing | ||
Weight | 680 grams (1.50 pounds) | 820 grams (1.81 pounds) |
Dimensions | 138 x 98 x 88mm (5.4" x 3.9" x 3.5") | 135 x 104 x 74mm (5.3" x 4.1" x 2.9") |
DXO scores | ||
DXO Overall rating | not tested | not tested |
DXO Color Depth rating | not tested | not tested |
DXO Dynamic range rating | not tested | not tested |
DXO Low light rating | not tested | not tested |
Other | ||
Battery life | 360 photographs | 800 photographs |
Battery format | Battery Pack | Battery Pack |
Battery ID | LP-E6NH | D-LI90 |
Self timer | Yes | Yes |
Time lapse shooting | ||
Type of storage | Dual SD slots (UHS-II supported) | Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1) |
Storage slots | Two | Two |
Retail price | $2,499 | $1,999 |