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Quick take: The A9 II has the highest resolution at 24MP; the S1IIE is the most affordable.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
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A9 II — Professional Sports, Wildlife & Photojournalism: The A9 II polished the A9's groundbreaking formula — 20fps blackout-free, improved subject tracking, and a LAN port made it the professional sports standard.
| Specification | S1IIELumix · 2025 | A9 IISony · 2019 |
|---|---|---|
| Price | £1,899Best | £3,299 |
| Sensor | 24MP full-frame BSI CMOS | 24.2MP Full-Frame Stacked BSI CMOS Exmor RS |
| Resolution | 24.0MP | 24.2MPBest |
| Video | Open-gate 6K/30p, 4K/60p, 10-bit | 4K/30p, 1080p/120p |
| Autofocus | Phase-hybrid AF with AI subject detection (people, animals, vehicles) | 693 phase-detect + 425 contrast-detect, real-time eye/body tracking |
| Stabilisation | 8-stop IBIS | IBIS — 5-axis, up to 5.5 stops |
| Burst Rate | 30fps electronicBest | 20fps (blackout-free with full AF/AE) |
| Battery Life | 380 shots (CIPA, LCD) | ~500 shots (CIPA)Best |
| Weight | 795g (with battery and card) | 678g (with battery and card)Best |
| Dimensions | — | 128.9 × 96.4 × 77.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 5.76M dots | EVF, OLED 3.69M dots, 0.78× magnification |
| Screen | Fully articulating touchscreen | 3.0" tilting touchscreen |
| Mount | L-mount | Sony FE (full-frame E-mount) |
| Memory Cards | CFexpress Type B + SD (UHS-II) | Dual SD UHS-II slots |
| Connectivity | USB-C (10Gbps), full-size HDMI, Wi-Fi, Bluetooth | USB-C, Wi-Fi 5GHz, Bluetooth, Ethernet (LAN), HDMI |
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 →