Upgrade Guide
Sony FX3→Sony A7 II
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Situational
One clear hardware improvement over the FX3. Worth it if that specific upgrade aligns with what you shoot.
What's new in the A7 II
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Resolution24MP vs 12MP (+12MP)
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 | A7 II | |
|---|---|---|---|
| Portrait | +1.1 | ||
| Street | +1.6 | ||
| Travel | +0.3 | ||
| Wedding & Events | -0.5 | ||
| Vlogging & Video | — | ||
| Filmmaking | — | ||
| Documentary | -2.3 | ||
| Sports & Action | +0.3 | ||
| Landscape | +1.1 | ||
| Wildlife | +0.9 | ||
| Casual | -1.0 | ||
| Food | -0.7 | ||
| Macro | — | ||
| Architecture | +0.5 | ||
| Astrophotography | -0.3 |
Full spec comparison
| Spec | FX3 | A7 II | |
|---|---|---|---|
| Price | £3,799 | £549 | |
| Released | 2021 | 2014 | ↓ |
| Sensor | 12.1MP full-frame BSI Exmor R CMOS (same as A7S III) | Full-frame BSI CMOS 35mm | |
| Resolution | 12MP | 24MP | ↑ |
| Video | 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone | 1080p 60fps | |
| Autofocus | Real-time tracking with subject recognition (human, animal) | 117-point phase-detect hybrid AF | |
| Stabilisation | 5-axis IBIS — 5 stops | 5-axis IBIS, 4.5 stops | |
| Burst Rate | 10fps mechanical, 10fps electronic | 5fps | ↓ |
| Battery Life | ~640 shots (CIPA) | 350 shots (CIPA) | ↓ |
| Weight | 715g (body only) | 599g (body only) | ↑ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | None — monitor/external EVF use only | EVF 0.71× 2.36M-dot | |
| Screen | 3.0" touchscreen, fully articulating | 3.0" tilting LCD, 1.23M dots (no touch) | |
| Mount | Sony FE mount (full-frame E-mount) | Sony E-Mount | |
| Memory Cards | Dual CFexpress Type A / SD UHS-II slots | SD / Memory Stick Pro Duo |
Compare side-by-side
⚖️ Compare these cameras
See FX3 and A7 II next to each other with our interactive comparison tool.
Get a personalised upgrade score
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Tell us what you shoot and we'll score the A7 II against your specific genres — not just specs.
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