This comparison puts the Canon R1 and Pentax K-3 III Monochrome side by side — two cameras measured against the same 27-spec sheet, with every meaningful gap scored and explained. On our weighted VS Score the Canon R1 finishes ahead, 73 to 62 — a solid lead.
The single biggest measurable gap is continuous shooting: 40 fps vs 12 fps.
Tap a category to see which one wins it.
Sensor
Canon R133
Pentax K-3 III Monochrome100
Pentax K-3 III Monochrome wins Sensor
Performance
Canon R1100
Pentax K-3 III Monochrome29
Canon R1 wins Performance
Video
Canon R1100
Pentax K-3 III Monochrome19
Canon R1 wins Video
Body & handling
Canon R166
Pentax K-3 III Monochrome83
Pentax K-3 III Monochrome wins Body & handling
73Points
62Points
Where the Canon R1 beats the Pentax K-3 III Monochrome
28 fps more continuous shooting ?40 fps vs 12 fps
4,796 more autofocus points ?4,897 vs 101
1,296 p more max video resolution ?3,456 p vs 2,160 p
90 fps more max frame rate (4K) ?120 fps vs 30 fps
Has 10-bit video ?
Has log profile ?
Has articulating screen ?
9,440,000 dots more viewfinder resolution ?9,440,000 dots vs 0 dots
Where the Pentax K-3 III Monochrome beats the Canon R1
2 MP more resolution ?26 MP vs 24 MP
1,497,600 more max ISO ?1,600,000 vs 102,400
295 g less weight ?820 g vs 1,115 g
100 shots more battery life ?800 shots vs 700 shots
The spec sheet pulls in both directions. These are the gaps big enough to shape the decision — with the actual figures, and what each one means in real-world use.
Continuous shootingPerformance
40 fps vs 12 fps — 3.3× more for the Canon R1
A higher burst rate catches fast action.
Autofocus pointsPerformance
4,897 vs 101 — 48.5× more for the Canon R1
More AF points give wider, more reliable focus coverage.
Max ISOSensor
102,400 vs 1,600,000 — 15.6× more for the Pentax K-3 III Monochrome
The highest video resolution the camera can record.
Which one should you buy?
There is no single answer — it depends on what you will actually use it for. Match your priority to the pick below.
Best for body & handlingPentax K-3 III Monochrome takes the category 83 to 66.
Best for videoCanon R1 takes the category 100 to 19 — driven by max frame rate (4K) (120 fps vs 30 fps).
Best for sensorPentax K-3 III Monochrome takes the category 100 to 33 — driven by max ISO (102,400 vs 1,600,000).
Best for performanceCanon R1 takes the category 100 to 29 — driven by continuous shooting (40 fps vs 12 fps).
The safe all-rounderCanon R1 wins more of the categories that carry real weight, topping the overall VS Score at 73.
Where each one falls short
Canon R1
Max ISO: 102,400 vs 1,600,000
Weight: 1,115 g vs 820 g
Battery life: 700 shots vs 800 shots
1 spec is unreported (shown as Unknown) and excluded from its scores.
Pentax K-3 III Monochrome
Continuous shooting: 40 fps vs 12 fps
Autofocus points: 4,897 vs 101
Max frame rate (4K): 120 fps vs 30 fps
1 spec is unreported (shown as Unknown) and excluded from its scores.
What matters to you?
Drag the sliders to weight each category and re-rank the products to suit your priorities.
Sensor
Performance
Video
Body & handling
Your ranking
Canon R1Your pick73
Pentax K-3 III MonochromeYour pick61
Score breakdown
Sensor
Canon R133
Pentax K-3 III Monochrome100
Decided by max ISO (102,400 vs 1,600,000) and resolution (24 MP vs 26 MP).
Performance
Canon R1100
Pentax K-3 III Monochrome29
Decided by continuous shooting (40 fps vs 12 fps) and autofocus points (4,897 vs 101).
Video
Canon R1100
Pentax K-3 III Monochrome19
Decided by max frame rate (4K) (120 fps vs 30 fps) and max video resolution (3,456 p vs 2,160 p).
Body & handling
Canon R166
Pentax K-3 III Monochrome83
Decided by articulating screen (Yes vs No) and viewfinder resolution (9,440,000 dots vs 0 dots).
How the VS Score works — and what it can’t tell you
Every measurable spec is scored relative to this matchup: the best value here earns 100%, the worst 0%, and everything between scales linearly. Each spec then counts according to an editorial weight that reflects real-world impact — a battery-capacity gap moves the score far more than a colour-options list. The category scores above are the weighted results inside each group, and the overall VS Score rolls all of them together; the evidence line under each category names the specs that actually decided it.
Unknown values are never estimated. A spec a product doesn’t report simply drops out of that product’s scoring — it isn’t penalised with a guess — and a spec only one side reports can never produce a “win”. The trade-off is honest but real: a thinner spec sheet means a score built on fewer data points, which is why the completeness figures are disclosed under About this data.
Most importantly: a spec-sheet lead is not the same as a better product. Megapixels, gigahertz and benchmark points describe capacity, not experience — image processing, software optimisation, thermals, haptics and ergonomics decide how a device actually feels, and no table captures reliability or long-term support quality. Treat the scores as a structured summary of what can be measured, read the caveats under each key difference, and use the weight tuner to re-rank the comparison by what matters to you.
Sensor
Resolution ?
24 MP
26 MP
A higher megapixel count captures more detail.
Sensor size ?
Full Frame
APS-C
The sensor format (e.g. Full-frame, APS-C).
Sensor type ?
Stacked CMOS
BSI-CMOS
The sensor technology (e.g. BSI-CMOS, stacked).
Max ISO ?
102,400
1,600,000
A higher native ISO ceiling helps in low light.
ISO range ?
100 – 102400 (boost 50 – 204800)
100 – 1600000
The native ISO sensitivity range of the sensor.
In-body stabilization ?
✓Canon R1
✓Pentax K-3 III Monochrome
IBIS steadies handheld photos and video.
Performance
Continuous shooting ?
40 fps
12 fps
A higher burst rate catches fast action.
Autofocus points ?
4,897
101
More AF points give wider, more reliable focus coverage.
Animal / eye AF ?
✓Canon R1
✓Pentax K-3 III Monochrome
Automatically tracks eyes for sharp portraits and wildlife.
Video
Max video resolution ?
3,456 p
2,160 p
The highest video resolution the camera can record.
Flat Log footage preserves dynamic range for editing.
Video bitrate ?
? Unknown (Canon R1)
? Unknown (Pentax K-3 III Monochrome)
A higher bitrate records more detail with fewer compression artefacts.
Microphone input ?
✓Canon R1
✓Pentax K-3 III Monochrome
A 3.5mm mic jack for better audio when filming.
Headphone jack ?
✓Canon R1
✓Pentax K-3 III Monochrome
Monitor audio while recording through a headphone jack.
Body & handling
Weight ?
1,115 g
820 g
A lighter body is easier to carry all day.
Weather sealing ?
✓Canon R1
✓Pentax K-3 III Monochrome
Resists dust and moisture for shooting outdoors.
Articulating screen ?
✓Canon R1
✗Pentax K-3 III Monochrome
A flip-out screen helps with vlogging and awkward angles.
Viewfinder resolution ?
9,440,000 dots
0 dots
A higher-resolution EVF gives a clearer preview.
Dual card slots ?
✓Canon R1
✓Pentax K-3 III Monochrome
Two card slots add backup and overflow storage.
Battery life ?
700 shots
800 shots
More shots per charge for longer outings.
Touchscreen ?
✓Canon R1
✓Pentax K-3 III Monochrome
A touch-sensitive screen for focus and menu control.
Wi-Fi ?
✓Canon R1
✓Pentax K-3 III Monochrome
Transfer photos and control the camera wirelessly.
Bluetooth ?
✓Canon R1
✓Pentax K-3 III Monochrome
A low-power link for remote control and geotagging.
USB-C ?
✓Canon R1
✓Pentax K-3 III Monochrome
A reversible USB-C port for fast transfer and charging.
Lens mount ?
Canon RF
Pentax KAF2
The lens mount system the camera uses.
About this data
Specifications are compiled from each manufacturer’s official spec sheet, cross-checked against trusted specification databases, and normalised into one schema so identical things are compared identically.
Specifications last verified July 10, 2026.
Data completeness: Canon R1 96% and Pentax K-3 III Monochrome 96% of the 27 specs in this category. Anything we could not verify is shown as Unknown — never estimated — and is excluded from all scores.
Prices and availability come from live retailer feeds via our shopping partners and refresh throughout the day; a missing price means no partner currently lists the product, not that it is discontinued.
Want the full picture? Our editorial guidelines explain how we research products, weight the scores and stay independent.
Spotted an error in a spec? Tell us and we will correct the sheet.
The Canon R1 comes out ahead, scoring 73 to 62 on our VS Score. It leads on Performance and Video. The Pentax K-3 III Monochrome answers back with stronger Sensor and Body & handling. Pick the Canon R1 unless Sensor and Body & handling matters most to you — then the Pentax K-3 III Monochrome is the smarter buy.