EOS R6vs A7S
GearScore™ Verdict — Which should you buy?
Wedding, Portrait, Sports, Video — EOS R6 (2020): The camera that made Canon's RF system worth taking seriously.
Astrophotography & Low-Light — A7S (2014): The original A7S pioneered the concept of a camera optimised entirely for low light. Its 12.2MP sensor has enormous photosites — extraordinary high-ISO performance that still holds up. Lacking IBIS and limited to 1080p internally (4K requires external recorder), it is a specialist tool. For astrophotography, event videography, or any scenario where light is genuinely scarce, it remains outstanding.
Who should buy what
EOS R6 (2020)
- Canon DSLR shooters moving to mirrorless
- Hybrid photographers who shoot both stills and video
A7S (2014)
- Astrophotographers
- Low-light event videographers
- Filmmakers needing clean high-ISO footage
Quick take: The eos r6 has the highest resolution at 20mp; the a7s is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 (2020) | A7S (2014) |
|---|---|---|
| Price | £1,299 | £600 |
| Sensor | Full-frame CMOS 35mm | 12.2MP Full-Frame BSI CMOS |
| Resolution | 20.1MP | 12.2MP |
| Video | 4K 60fps (crop), 4K 30fps (full), 1080p 120fps | 1080p/60p internal, 4K via HDMI (external recorder) |
| Autofocus | Dual Pixel CMOS AF II, 6072 AF positions, subject tracking | Phase-detect / contrast-detect hybrid AF |
| Stabilisation | 5-axis IBIS, up to 8 stops coordinated IS | None |
| Burst Rate | 12fps mechanical, 20fps electronic | 5fps |
| Battery Life | 380 shots (LCD), 510 shots (EVF) | ~370 shots (CIPA) |
| Weight | 598g (body only) | 474g (with battery and card) |
| Dimensions | 138.4 × 97.5 × 88.4mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.76× 3.69M-dot | Electronic, 2.36M dots, 0.71× magnification |
| Screen | 3.0" fully articulating touchscreen, 1.62M-dot | 3.0" tilting LCD, 1.23M dots |
| Mount | Canon RF | Sony FE (full-frame E-mount) |
| Memory Cards | 2× SD UHS-II | Single SD / MemoryStick PRO Duo slot |
| Connectivity | Wi-Fi 5GHz, Bluetooth 4.2, USB-C 3.1, HDMI | Multi/Micro USB, Wi-Fi, NFC |
Suitability by genre
| Genre | EOS R6 | A7S |
|---|---|---|
| Portrait | ||
| Sports & Action | ||
| Wedding & Events | — | |
| Vlogging & Video | ||
| Wildlife | — | |
| Landscape | ||
| Street | ||
| Astrophotography | — | |
| Travel | — |
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