EOS R5 Cvs Pentax K-3 Mark III
Canon
EOS R5 C (2022)
Starting from £3799 new
Best for Professional video, documentary & hybrid commercial work
View EOS R5 C
Pentax
Pentax K-3 Mark III (2021)
Starting from £1699 new
Best for DSLR enthusiasts & outdoor photographers
View Pentax K-3 Mark III
GearScore™ Verdict — Which should you buy?
Professional Video, Documentary & Hybrid Commercial Work — EOS R5 C (2022): Canon's R5 reborn for cinema — 8K RAW unlimited, Cinema EOS colour science, and 45MP stills in a weather-sealed body.
Dslr Enthusiasts & Outdoor Photographers — Pentax K-3 Mark III (2021): The finest APS-C DSLR ever made — class-leading weather sealing, optical viewfinder, 5-axis IBIS, and extraordinary build for photographers committed to DSLR.
Who should buy what
EOS R5 C (2022)
- Videographers and cinematographers who want Canon Cinema EOS quality in a compact, run-and-gun body
- Hybrid photographers who shoot high-end stills and need 8K RAW video capability in the same body
- Documentary filmmakers who want unlimited recording with a built-in fan
- RF lens owners who want to add a dedicated cinema body to their Canon system
Pentax K-3 Mark III (2021)
- DSLR photographers who want the finest APS-C optical viewfinder experience
- Outdoor and weather photographers who need robust all-weather sealing
- Pentax lens owners who want to use their existing K-mount glass
- Photographers who prefer optical viewfinders and refuse to switch to mirrorless
Quick take: The eos r5 c has the highest resolution at 45mp; the pentax k-3 mark iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R5 C (2022) | Pentax K-3 Mark III (2021) |
|---|---|---|
| Price | £3,799 | £1,699 |
| Sensor | 45MP full-frame CMOS — Cinema EOS colour science | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 45.0MP | 25.7MP |
| Video | 8K RAW internal, 8K/30p, 4K/120p — Cinema RAW Light, C-Log2, C-Log3 | 4K/30p, 1080p/60p |
| Autofocus | Dual Pixel CMOS AF II — subject tracking with Intelligent AF | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | 5-axis IBIS — 8 stops (with IS lens) | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | 12fps mechanical, 20fps electronic | 12fps |
| Battery Life | ~220 shots stills / unlimited video with fan | 800 shots (CIPA) |
| Weight | 680g body only | 820g body only |
| Dimensions | 138.5 × 98.0 × 88.0mm | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.76× 5.76M-dot OLED | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | 3.0" fully articulating touchscreen, 2.1M dots | 3.2" tilting touchscreen |
| Mount | Canon RF mount (full-frame) | Pentax KF-mount |
| Memory Cards | Dual CFexpress Type B slots | Dual SD UHS-II |
| Connectivity | USB-C, 12G-SDI, HDMI full-size, 3.5mm XLR via adapter, Wi-Fi, Bluetooth | USB-C, Wi-Fi, Bluetooth |
Suitability by genre
| Genre | EOS R5 C | Pentax K-3 Mark III |
|---|---|---|
| Vlogging & Video | ||
| Portrait | ||
| Landscape | ||
| Wedding | — | |
| Sports | — | |
| Travel | ||
| Wildlife | — | |
| Sports & Action | — |
More comparisons with EOS R5 C
Camera family history