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Quick take: The A1 II has the highest resolution at 50MP; the S1 II is the most affordable.
Where the S1 II wins
Where the A1 II wins
16 specs side by side·15 genres scored·UK prices from Wex Photo Video, Clifton Cameras, MPB, eBay and Amazon UK
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The A1 II is 2 mm wider, 5 mm shorter, 9 mm slimmer and 57 g lighter than the S1 II.
Drawn to scale from the makers' dimensions (W × H × D). Front shown, depth on the slanted edge.
A1 II — Professional Sports, Wildlife & High-Resolution Studio Work: The most complete camera ever made — 50MP, 30fps, 8K, and the world's best EVF in a single flagship body.
| Specification | S1 IILumix · 2025 | A1 IISony · 2024 |
|---|---|---|
| Price | £1,899Best | £5,699 |
| Sensor | 24.1MP full-frame partially-stacked CMOS | 50.1MP full-frame stacked BSI CMOS |
| Resolution | 24.1MP | 50.1MPBest |
| Video | Open-gate 6K/30p, 5.9K/60p, 4K/120p, internal ProRes RAW, 10-bit | 8K/30p, 4K/120p 10-bit, S-Log3 |
| Autofocus | Phase-hybrid AF with AI subject detection (people, animals, vehicles) | AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train |
| Stabilisation | 8-stop IBIS with cropless E.I.S. | 8.5-stop IBIS (with in-lens OSS) |
| Burst Rate | 70fps electronicBest | 30fps electronic (with full AF/AE), 10fps mechanical |
| Battery Life | 360 shots (CIPA, LCD) | ~530 shots (CIPA)Best |
| Weight | 800g (with battery and card) | 743g (body only)Best |
| Dimensions | 134 × 102 × 92 mm | 136.1 × 96.9 × 82.9mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 5.76M dots | EVF 0.9× 9.44M-dot — the highest resolution EVF available |
| Screen | Fully articulating touchscreen | 3.2" fully articulating touchscreen, 2.1M dots |
| Mount | L-mount | Sony E-mount (full-frame) |
| Memory Cards | CFexpress Type B + SD | Dual CFexpress Type A / SD UHS-II slots |
| Connectivity | USB-C, full-size HDMI, Wi-Fi, Bluetooth | USB-C 3.2 Gen 2, Wi-Fi 6GHz, Bluetooth 5.3, HDMI full-size |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
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 →