EOS R6vs A7R III
VS
Sony
A7R III (2017)
Starting from £1799 new
Best for Landscape, studio & commercial photography
View A7R III
GearScore™ Verdict — Which should you buy?
Wedding, Portrait, Sports, Video — EOS R6 (2020): The camera that made Canon's RF system worth taking seriously.
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 R6 (2020)
- Canon DSLR shooters moving to mirrorless
- Hybrid photographers who shoot both stills and video
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 a7r iii has the highest resolution at 42mp; the eos r6 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 (2020) | A7R III (2017) |
|---|---|---|
| Price | £1,299 | £1,799 |
| Sensor | Full-frame CMOS 35mm | 42.4MP full-frame BSI Exmor R CMOS |
| Resolution | 20.1MP | 42.4MP |
| Video | 4K 60fps (crop), 4K 30fps (full), 1080p 120fps | 4K/30p (full-frame readout), 1080p/120p |
| Autofocus | Dual Pixel CMOS AF II, 6072 AF positions, subject tracking | 399 phase-detect + 425 contrast AF points — real-time Eye AF |
| Stabilisation | 5-axis IBIS, up to 8 stops coordinated IS | 5-axis IBIS — 5.5 stops |
| Burst Rate | 12fps mechanical, 20fps electronic | 10fps with AF/AE tracking |
| Battery Life | 380 shots (LCD), 510 shots (EVF) | ~650 shots (CIPA) |
| Weight | 598g (body only) | 650g body only |
| Dimensions | 138.4 × 97.5 × 88.4mm | 126.9 × 95.6 × 73.7mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.76× 3.69M-dot | EVF, 3.69M dots, 0.78× magnification |
| Screen | 3.0" fully articulating touchscreen, 1.62M-dot | 3.0" touchscreen, tilting |
| Mount | Canon RF | Sony FE mount (full-frame E-mount) |
| Memory Cards | 2× SD UHS-II | Dual SD slots (one UHS-II) |
| Connectivity | Wi-Fi 5GHz, Bluetooth 4.2, USB-C 3.1, HDMI | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack |
Suitability by genre
| Genre | EOS R6 | A7R III |
|---|---|---|
| Landscape | — | |
| Portrait | — | |
| Vlogging & Video | — | |
| Wedding | — | |
| Street | — | |
| Sports | — |
More comparisons with EOS R6
Camera family history