EOS R5 Cvs A7R III
Canon
EOS R5 C (2022)
Starting from £3799 new
Best for Professional video, documentary & hybrid commercial work
View EOS R5 C
Sony
A7R III (2017)
Starting from £1799 new
Best for Landscape, studio & commercial photography
View A7R 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.
Landscape, Studio & Commercial Photography — A7R III (2017): The camera that converted professionals to mirrorless — 42MP, IBIS, and 10fps in a body that still competes today.
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
A7R III (2017)
- Landscape and studio photographers who need 42MP resolution at a used-price discount vs A7R IV
- Canon/Nikon DSLR professionals considering a mirrorless switch at a lower investment
- Commercial and product photographers who want full-frame resolution with IBIS for handheld work
- Portrait photographers who want the sharpest possible full-frame files for large print work
Quick take: The eos r5 c has the highest resolution at 45mp; the a7r iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R5 C (2022) | A7R III (2017) |
|---|---|---|
| Price | £3,799 | £1,799 |
| Sensor | 45MP full-frame CMOS — Cinema EOS colour science | 42.4MP full-frame BSI Exmor R CMOS |
| Resolution | 45.0MP | 42.4MP |
| Video | 8K RAW internal, 8K/30p, 4K/120p — Cinema RAW Light, C-Log2, C-Log3 | 4K/30p (full-frame readout), 1080p/120p |
| Autofocus | Dual Pixel CMOS AF II — subject tracking with Intelligent AF | 399 phase-detect + 425 contrast AF points — real-time Eye AF |
| Stabilisation | 5-axis IBIS — 8 stops (with IS lens) | 5-axis IBIS — 5.5 stops |
| Burst Rate | 12fps mechanical, 20fps electronic | 10fps with AF/AE tracking |
| Battery Life | ~220 shots stills / unlimited video with fan | ~650 shots (CIPA) |
| Weight | 680g body only | 650g body only |
| Dimensions | 138.5 × 98.0 × 88.0mm | 126.9 × 95.6 × 73.7mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.76× 5.76M-dot OLED | EVF, 3.69M dots, 0.78× magnification |
| Screen | 3.0" fully articulating touchscreen, 2.1M dots | 3.0" touchscreen, tilting |
| Mount | Canon RF mount (full-frame) | Sony FE mount (full-frame E-mount) |
| Memory Cards | Dual CFexpress Type B slots | Dual SD slots (one UHS-II) |
| Connectivity | USB-C, 12G-SDI, HDMI full-size, 3.5mm XLR via adapter, Wi-Fi, Bluetooth | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack |
Suitability by genre
| Genre | EOS R5 C | A7R III |
|---|---|---|
| Vlogging & Video | ||
| Portrait | ||
| Landscape | ||
| Wedding | ||
| Sports | ||
| Travel | — | |
| Street | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with EOS R5 C
Camera family history