Upgrade Guide
Sony FX3→Sony A1 II
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
→
Worthwhile
Clear improvements over the FX3. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the A1 II
-
Resolution50MP vs 12MP (+38MP)
-
StabilisationImproved — 8.5-stop IBIS (with in-lens OSS)
-
Burst rate30fps electronic (with full AF/AE), 10fps mechanical vs 10fps mechanical, 10fps electronic
-
Generation4 years newer (2025 vs 2021)
Suitability by genre
| Genre | FX3 | A1 II | |
|---|---|---|---|
| Vlogging & Video | — | ||
| Portrait | +2.0 | ||
| Low Light | — | ||
| Street | — | ||
| Wedding | — | ||
| Travel | +3.0 | ||
| Sports | — | ||
| Wildlife | — | ||
| Landscape | — |
Full spec comparison
| Spec | FX3 | A1 II | |
|---|---|---|---|
| Price | £3,799 | £6,500 | |
| Released | 2021 | 2025 | ↑ |
| Sensor | 12.1MP full-frame BSI Exmor R CMOS (same as A7S III) | 50.1MP full-frame stacked BSI CMOS | |
| Resolution | 12MP | 50MP | ↑ |
| Video | 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone | 8K/30p, 4K/120p 10-bit, 4K/240p super slow-motion | |
| Autofocus | Real-time tracking with subject recognition (human, animal) | AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train | |
| Stabilisation | 5-axis IBIS — 5 stops | 8.5-stop IBIS (with in-lens OSS) | |
| Burst Rate | 10fps mechanical, 10fps electronic | 30fps electronic (with full AF/AE), 10fps mechanical | ↑ |
| Battery Life | ~640 shots (CIPA) | ~530 shots (CIPA) | ↓ |
| Weight | 715g body only (with XLR handle) | 743g body only | ↓ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | None — monitor/external EVF use only | EVF 0.9× 9.44M-dot — the highest resolution EVF available | |
| Screen | 3.0" touchscreen, fully articulating | 3.2" fully articulating touchscreen, 2.1M dots | |
| Mount | Sony FE mount (full-frame E-mount) | Sony E-mount (full-frame) | |
| Memory Cards | Dual CFexpress Type A / SD UHS-II slots | Dual CFexpress Type A / SD UHS-II slots |
Compare side-by-side
⚖️ Compare these cameras
See FX3 and A1 II next to each other with our interactive comparison tool.
Get a personalised upgrade score
Run the upgrade checker →
Tell us what you shoot and we'll score the A1 II against your specific genres — not just specs.
Other upgrades from the FX3
Related buying guides
Camera family history