Upgrade Guide
Sony A5100→Sony A1 II
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the A5100. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the A1 II
-
Resolution50MP vs 24MP (+26MP)
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Weather sealingAdded — fully sealed body
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StabilisationIBIS added — significant for handheld and video
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Burst rate30fps electronic (with full AF/AE), 10fps mechanical vs 6fps
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Battery life~530 shots (CIPA) vs ~400 shots (CIPA)
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Generation11 years newer (2025 vs 2014)
Suitability by genre
| Genre | A5100 | A1 II | |
|---|---|---|---|
| Casual | — | ||
| Travel | -1.5 | ||
| Portrait | +1.5 | ||
| Street | — | ||
| Vlogging & Video | +2.0 | ||
| Landscape | +2.5 | ||
| Sports & Action | — | ||
| Sports | — | ||
| Wildlife | — |
Full spec comparison
| Spec | A5100 | A1 II | |
|---|---|---|---|
| Price | £200 | £6,500 | |
| Released | 2014 | 2025 | ↑ |
| Sensor | 24.3MP APS-C Exmor CMOS | 50.1MP full-frame stacked BSI CMOS | |
| Resolution | 24MP | 50MP | ↑ |
| Video | 1080p/60p | 8K/30p, 4K/120p 10-bit, 4K/240p super slow-motion | |
| Autofocus | Hybrid phase-detect / contrast-detect AF, face detection | AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train | |
| Stabilisation | None | 8.5-stop IBIS (with in-lens OSS) | |
| Burst Rate | 6fps | 30fps electronic (with full AF/AE), 10fps mechanical | ↑ |
| Battery Life | ~400 shots (CIPA) | ~530 shots (CIPA) | ↑ |
| Weight | 224g (body only) | 743g body only | ↓ |
| Weather Sealed | No | Yes | ↑ |
| Viewfinder | None | EVF 0.9× 9.44M-dot — the highest resolution EVF available | |
| Screen | 3.0" flip-up touchscreen, 921k dots | 3.2" fully articulating touchscreen, 2.1M dots | |
| Mount | Sony E-mount | Sony E-mount (full-frame) | |
| Memory Cards | Single SD / MemoryStick PRO Duo slot | Dual CFexpress Type A / SD UHS-II slots |
Compare side-by-side
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