A1 IIvs A7S
Sony
A1 II (2025)
Starting from £6500 new
Best for Professional sports, wildlife & high-resolution studio work
View A1 II
GearScore™ Verdict — Which should you buy?
Professional Sports, Wildlife & High-Resolution Studio Work — A1 II (2025): The most complete camera ever made — 50MP, 30fps, 8K, and the world's best EVF in a single flagship body.
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
A1 II (2025)
- Professional sports and wildlife photographers who need 30fps, 50MP, and the best AF available
- Commercial and advertising photographers who demand 50MP resolution alongside pro video specs
- Photojournalists who need a single body capable of handling every assignment
- Sony system shooters ready to invest in the absolute best
A7S (2014)
- Astrophotographers
- Low-light event videographers
- Filmmakers needing clean high-ISO footage
Quick take: The a1 ii has the highest resolution at 50mp; the a7s is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | A1 II (2025) | A7S (2014) |
|---|---|---|
| Price | £6,500 | £600 |
| Sensor | 50.1MP full-frame stacked BSI CMOS | 12.2MP Full-Frame BSI CMOS |
| Resolution | 50.1MP | 12.2MP |
| Video | 8K/30p, 4K/120p 10-bit, 4K/240p super slow-motion | 1080p/60p internal, 4K via HDMI (external recorder) |
| Autofocus | AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train | Phase-detect / contrast-detect hybrid AF |
| Stabilisation | 8.5-stop IBIS (with in-lens OSS) | None |
| Burst Rate | 30fps electronic (with full AF/AE), 10fps mechanical | 5fps |
| Battery Life | ~530 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 743g body only | 474g (with battery and card) |
| Dimensions | 136.1 × 96.9 × 82.9mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.9× 9.44M-dot — the highest resolution EVF available | Electronic, 2.36M dots, 0.71× magnification |
| Screen | 3.2" fully articulating touchscreen, 2.1M dots | 3.0" tilting LCD, 1.23M dots |
| Mount | Sony E-mount (full-frame) | Sony FE (full-frame E-mount) |
| Memory Cards | Dual CFexpress Type A / SD UHS-II slots | Single SD / MemoryStick PRO Duo slot |
| Connectivity | USB-C 3.2 Gen 2, Wi-Fi 6GHz, Bluetooth 5.3, HDMI full-size | Multi/Micro USB, Wi-Fi, NFC |
Suitability by genre
| Genre | A1 II | A7S |
|---|---|---|
| Sports | — | |
| Wildlife | — | |
| Portrait | ||
| Landscape | ||
| Vlogging & Video | ||
| Travel | ||
| Astrophotography | — | |
| Street | — | |
| Sports & Action | — |
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