EOS M6 Mark IIvs A7S III
Sony
A7S III (2020)
Starting from £2999 new
Best for Professional video & low-light filmmaking
View A7S III
GearScore™ Verdict — Which should you buy?
Portrait & Street — EOS M6 Mark II (2019): The M6 Mark II is the peak of the EF-M system — 32.5MP, 14fps, and Dual Pixel CMOS AF II in a compact rangefinder-style body. No built-in EVF is the main compromise, but the optional EVF-DC2 resolves this. An outstanding used-market buy for photographers who want high resolution and fast AF in a genuinely compact body.
Professional Video & Low-Light Filmmaking — A7S III (2020): 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 M6 Mark II (2019)
- Enthusiast photographers who want the best the EF-M system offers
- Portrait and landscape photographers wanting high resolution in a compact body
- Street photographers who want a fast, discreet, high-resolution camera
- Used-market buyers seeking top EF-M performance
A7S III (2020)
- 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
Quick take: The eos m6 mark ii has the highest resolution at 32mp; the eos m6 mark ii is the most affordable; only the a7s iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS M6 Mark II (2019) | A7S III (2020) |
|---|---|---|
| Price | £600 | £2,999 |
| Sensor | 32.5MP APS-C CMOS (Dual Pixel) | 12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated) |
| Resolution | 32.5MP | 12.1MP |
| Video | 4K/30p (1.56× crop), 1080p/120p | 4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p |
| Autofocus | Dual Pixel CMOS AF II with face and eye detection | Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition |
| Stabilisation | — | 5.5-stop IBIS |
| Burst Rate | 14fps (mechanical and electronic) | 10fps mechanical |
| Battery Life | ~305 shots (CIPA) | ~600 shots (CIPA) / ~70min continuous 4K recording |
| Weight | 408g (body only) | 699g (body, battery, card) |
| Dimensions | 119.6 × 70.0 × 49.2mm | 128.9 × 96.9 × 80.8mm |
| Weather Sealed | No | Yes |
| Viewfinder | None (optional EVF-DC2 accessory) | OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made |
| Screen | 3.0" fully articulating touchscreen, 1.04M dots | 3.0" vari-angle touchscreen, 1.44M dots |
| Mount | Canon EF-M mount | Sony E-mount |
| Memory Cards | Single SD UHS-II slot | Dual CFexpress Type A / SD UHS-II (both slots) |
| Connectivity | USB, Wi-Fi, Bluetooth | USB-C (USB 3.2 Gen 2), full-size HDMI, Wi-Fi 6, Bluetooth |
Suitability by genre
| Genre | EOS M6 Mark II | A7S III |
|---|---|---|
| Portrait | ||
| Street | ||
| Travel | ||
| Landscape | — | |
| Casual | — | |
| Vlogging & Video | — | |
| Wildlife | ||
| Sports & Action | — | |
| Video | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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Camera family history