Upgrade Guide
Sony A7S II→Sony A1 II
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the A7S II. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the A1 II
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Resolution50MP vs 12MP (+38MP)
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StabilisationImproved — 8.5-stop IBIS (with in-lens OSS)
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Burst rate30fps electronic (with full AF/AE), 10fps mechanical vs 5fps continuous
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Battery life~530 shots (CIPA) vs ~370 shots (CIPA)
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Generation10 years newer (2025 vs 2015)
Suitability by genre
| Genre | A7S II | A1 II | |
|---|---|---|---|
| Vlogging & Video | — | ||
| Low Light | — | ||
| Wedding | — | ||
| Portrait | +2.0 | ||
| Street | — | ||
| Sports | +5.0 | ||
| Wildlife | — | ||
| Landscape | — | ||
| Travel | — |
Full spec comparison
| Spec | A7S II | A1 II | |
|---|---|---|---|
| Price | £799 | £6,500 | |
| Released | 2015 | 2025 | ↑ |
| Sensor | 12.1MP full-frame BSI Exmor CMOS | 50.1MP full-frame stacked BSI CMOS | |
| Resolution | 12MP | 50MP | ↑ |
| Video | 4K/30p internal (full sensor readout), 1080p/120p, S-Log2/S-Log3 | 8K/30p, 4K/120p 10-bit, 4K/240p super slow-motion | |
| Autofocus | 169 phase-detect + 25 contrast AF — limited by modern standards | AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train | |
| Stabilisation | 5-axis IBIS — 4.5 stops (first Sony mirrorless with IBIS) | 8.5-stop IBIS (with in-lens OSS) | |
| Burst Rate | 5fps continuous | 30fps electronic (with full AF/AE), 10fps mechanical | ↑ |
| Battery Life | ~370 shots (CIPA) | ~530 shots (CIPA) | ↑ |
| Weight | 584g body only | 743g body only | ↓ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | EVF, 2.36M dots, 0.71× magnification | EVF 0.9× 9.44M-dot — the highest resolution EVF available | |
| Screen | 3.0" tilting LCD, 1.23M dots | 3.2" fully articulating touchscreen, 2.1M dots | |
| Mount | Sony FE mount (full-frame E-mount) | Sony E-mount (full-frame) | |
| Memory Cards | Dual SD UHS-I slots | Dual CFexpress Type A / SD UHS-II slots |
Compare side-by-side
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