Upgrade Guide
Sony Sony FX2→Sony A5100
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Skip it
The A5100 offers little measurable spec improvement over the Sony FX2. Spend the money on glass instead.
Unchanged or similar
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Resolution24MP (down from 33MP — optimised for low light)
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Weather sealingNot present in new body
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StabilisationIBIS not present in new body
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 | Sony FX2 | A5100 | |
|---|---|---|---|
| Portrait | -1.6 | ||
| Street | +1.7 | ||
| Travel | +0.3 | ||
| Wedding & Events | -3.3 | ||
| Vlogging & Video | -1.0 | ||
| Filmmaking | — | ||
| Documentary | -3.6 | ||
| Sports & Action | -1.7 | ||
| Landscape | -0.7 | ||
| Wildlife | -1.1 | ||
| Casual | — | ||
| Food | -1.6 | ||
| Macro | -0.2 | ||
| Architecture | -1.6 | ||
| Astrophotography | -1.6 | ||
| Fun & simple | — |
Full spec comparison
| Spec | Sony FX2 | A5100 | |
|---|---|---|---|
| Price | £2,499 | £200 | |
| Released | 2025 | 2014 | ↓ |
| Sensor | 33MP full-frame Exmor R CMOS | 24.3MP APS-C Exmor CMOS | |
| Resolution | 33MP | 24MP | ↓ |
| Video | 7K-oversampled 4K/30p full-frame, 4K/60p (Super 35 crop), 10-bit, dual base ISO Log, external 16-bit RAW via HDMI | 1080p/60p | |
| Autofocus | Hybrid phase-detect AF with subject tracking and auto-framing | Hybrid phase-detect / contrast-detect AF, face detection | |
| Stabilisation | Dynamic Active IBIS | No stabilisation | |
| Burst Rate | 10fps | 6fps | ↓ |
| Battery Life | 600 shots (CIPA); ~100 min continuous video | ~400 shots (CIPA) | ↓ |
| Weight | 679g (body only) | 224g (body only) | ↑ |
| Weather Sealed | Yes | Not weather sealed | ↓ |
| Viewfinder | Optional clip-on EVF, 3.68M dots | No viewfinder | |
| Screen | Fully articulating touchscreen | 3.0" flip-up touchscreen, 921k dots | |
| Mount | Sony E-mount | Sony E-mount | |
| Memory Cards | Slot 1 CFexpress Type A / SD UHS-II, slot 2 SD UHS-II | Single SD / MemoryStick PRO Duo slot |
Compare side-by-side
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Tell us what you shoot and we'll score the A5100 against your specific genres — not just specs.
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