Upgrade Guide
Sony FX3→Sony A1
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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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
-
Resolution50MP vs 12MP (+38MP)
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StabilisationImproved — IBIS — up to 5.5 stops
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Burst rate30fps electronic with full AF/AE vs 10fps mechanical, 10fps electronic
Suitability by genre
Base scores — computed from verified specs for an enthusiast shooting photo and video. The Upgrade Checker adjusts them for your skill level.
| Genre | FX3 | A1 | |
|---|---|---|---|
| Portrait | +2.5 | ||
| Street | +1.8 | ||
| Travel | +0.4 | ||
| Wedding & Events | +1.9 | ||
| Vlogging & Video | — | ||
| Filmmaking | -1.3 | ||
| Documentary | -0.4 | ||
| Sports & Action | +3.3 | ||
| Landscape | +2.9 | ||
| Wildlife | +2.9 | ||
| Casual | -0.1 | ||
| Food | +0.7 | ||
| Macro | +1.8 | ||
| Architecture | +2.7 | ||
| Astrophotography | +0.1 |
Full spec comparison
| Spec | FX3 | A1 | |
|---|---|---|---|
| Price | £3,799 | £5,999 | |
| Released | 2021 | 2021 | |
| Sensor | 12.1MP full-frame BSI Exmor R CMOS (same as A7S III) | 50.1MP Full-Frame Stacked BSI CMOS Exmor RS | |
| Resolution | 12MP | 50MP | ↑ |
| Video | 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone | 8K/30p, 4K/120p, 1080p/240p | |
| Autofocus | Real-time tracking with subject recognition (human, animal) | Real-time Tracking, AI subject recognition — 759 phase-detect points | |
| Stabilisation | 5-axis IBIS — 5 stops | IBIS — up to 5.5 stops | |
| Burst Rate | 10fps mechanical, 10fps electronic | 30fps electronic with full AF/AE | ↑ |
| Battery Life | ~640 shots (CIPA) | ~430 shots (CIPA) | ↓ |
| Weight | 715g (body only) | 737g (with battery and card) | ↓ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | None — monitor/external EVF use only | EVF, 9.44M dots, 0.90× magnification, 240fps | |
| Screen | 3.0" touchscreen, fully articulating | 3.0" fully tilting touchscreen | |
| Mount | Sony FE mount (full-frame E-mount) | Sony FE mount (full-frame E-mount) | |
| Memory Cards | Dual CFexpress Type A / SD UHS-II slots | Dual CFexpress Type A / SD UHS-II |
Compare side-by-side
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