Is it worth upgrading? Spec analysis, key improvements, and our verdict.
| Genre | A7R II | A1 II | |
|---|---|---|---|
| Portrait | — | ||
| Landscape | — | ||
| Architecture | — | ||
| Travel | — | ||
| Vlogging & Video | +2.0 | ||
| Sports & Action | — | ||
| Sports | — | ||
| Wildlife | — |
| Spec | A7R II | A1 II | |
|---|---|---|---|
| Price | £799 | £6,500 | |
| Released | 2015 | 2025 | ↑ |
| Sensor | 42.4MP Full-Frame BSI CMOS Exmor R | 50.1MP full-frame stacked BSI CMOS | |
| Resolution | 42MP | 50MP | ↑ |
| Video | 4K/30p (S35 or full-frame), 1080p/120p | 8K/30p, 4K/120p 10-bit, 4K/240p super slow-motion | |
| Autofocus | 399 phase-detect + 25 contrast-detect AF points, face detection | AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train | |
| Stabilisation | IBIS — 5-axis, up to 4.5 stops (first A7R with IBIS) | 8.5-stop IBIS (with in-lens OSS) | |
| Burst Rate | 5fps | 30fps electronic (with full AF/AE), 10fps mechanical | ↑ |
| Battery Life | ~290 shots (CIPA) | ~530 shots (CIPA) | ↑ |
| Weight | 625g (with battery and card) | 743g body only | ↓ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | EVF, OLED 2.36M dots, 0.78× magnification | EVF 0.9× 9.44M-dot — the highest resolution EVF available | |
| Screen | 3.0" tilting LCD, 1.23M dots (no touch) | 3.2" fully articulating touchscreen, 2.1M dots | |
| Mount | Sony FE (full-frame E-mount) | Sony E-mount (full-frame) | |
| Memory Cards | Single SD UHS-I slot | Dual CFexpress Type A / SD UHS-II slots |
See A7R II and A1 II next to each other with our interactive comparison tool.
Tell us what you shoot and we'll score the A1 II against your specific genres — not just specs.