Canon
EOS R6 2020
Best for Wedding, portrait, sports, video
£1299
list price · used from £711 at eBay
Decision tools · Compare
EOS R6 vs A7S III
Quick take: The EOS R6 has the highest resolution at 20MP; the EOS R6 is the most affordable.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
Sony
A7S III 2020
Best for Professional video & low-light filmmaking
£3389
new today at Clifton Cameras
Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more
Verdictwhich should you buy?
EOS R6 — Wedding, Portrait, Sports, Video: The camera that made Canon's RF system worth taking seriously.
A7S III — Professional Video & Low-Light Filmmaking: If video is your primary discipline, the A7S III is the camera. 4K/120p at 10-bit in a weather-sealed body with a 9.44M dot EVF is an extraordinary package. The 12MP sensor isn't limiting for video — and it's usable at ISO 409,600 in a pinch.
Who should buy what
EOS R6 (2020)
is the right camera for you if…
- Canon DSLR shooters moving to mirrorless
- Hybrid photographers who shoot both stills and video
A7S III (2020)
is the right camera for you if…
- Filmmakers and videographers who need 4K/120p at 10-bit
- Event videographers who shoot in dark venues regularly
- Documentary filmmakers who need reliable AF and weather sealing
- Hybrid shooters where video is primary and stills are secondary
Full specificationsthe better value in each row is highlighted
| Specification | EOS R6Canon · 2020 | A7S IIISony · 2020 |
|---|---|---|
| Price | £1,299Best | £3,389 |
| Sensor | Full-frame CMOS 35mm | 12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated) |
| Resolution | 20.1MPBest | 12.1MP |
| Video | 4K 60fps (crop), 4K 30fps (full), 1080p 120fps | 4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p |
| Autofocus | Dual Pixel CMOS AF II, 6072 AF positions, subject tracking | Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition |
| Stabilisation | 5-axis IBIS, up to 8 stops coordinated IS | 5.5-stop IBIS |
| Burst Rate | 12fps mechanical, 20fps electronicBest | 10fps mechanical |
| Battery Life | 380 shots (LCD), 510 shots (EVF) | ~600 shots (CIPA) / ~70min continuous 4K recordingBest |
| Weight | 598g (body only)Best | 699g (with battery and card) |
| Dimensions | 138.4 × 97.5 × 88.4mm | 128.9 × 96.9 × 80.8mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.76× 3.69M-dot | OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made |
| Screen | 3.0" fully articulating touchscreen, 1.62M-dot | 3.0" vari-angle touchscreen, 1.44M dots |
| Mount | Canon RF | Sony E-mount |
| Memory Cards | 2× SD UHS-II | Dual CFexpress Type A / SD UHS-II (both slots) |
| Connectivity | Wi-Fi 5GHz, Bluetooth 4.2, USB-C 3.1, HDMI | USB-C (USB 3.2 Gen 2), full-size HDMI, Wi-Fi 6, Bluetooth |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
EOS R6
A7S III
Portrait
7.9/10
7.5/10
Street
6.3/10
6.2/10
Travel
6.1/10
6.0/10
Wedding & Events
7.5/10
7.5/10
Vlogging & Video
5.7/10
5.9/10
Filmmaking
7.1/10
8.2/10
Documentary
7.2/10
7.7/10
Sports & Action
7.5/10
7.4/10
Landscape
6.1/10
5.5/10
Wildlife
7.7/10
7.5/10
Casual
5.1/10
4.9/10
Food
7.4/10
6.8/10
Macro
7.2/10
5.8/10
Architecture
6.2/10
5.5/10
Astrophotography
6.5/10
7.8/10
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
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