Upgrade Guide
Sony A7 III→Sony A5100
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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The A5100 offers little measurable spec improvement over the A7 III. Spend the money on glass instead.
Unchanged or similar
-
ResolutionSimilar (24MP)
-
Weather sealingNot present in new body
-
StabilisationIBIS not present in new body
Suitability by genre
| Genre | A7 III | A5100 | |
|---|---|---|---|
| Portrait | -1.5 | ||
| Travel | -0.5 | ||
| Street | -1.5 | ||
| Wildlife | — | ||
| Video | — | ||
| Casual | — | ||
| Vlogging & Video | — | ||
| Landscape | — | ||
| Sports & Action | — |
Full spec comparison
| Spec | A7 III | A5100 | |
|---|---|---|---|
| Price | £1,699 | £200 | |
| Released | 2018 | 2014 | ↓ |
| Sensor | 24.2MP Full-Frame Exmor R BSI CMOS | 24.3MP APS-C Exmor CMOS | |
| Resolution | 24MP | 24MP | ↑ |
| Video | 4K/30p (6K oversampled), 1080p/120p slow-motion | 1080p/60p | |
| Autofocus | Phase-detect, 693 points, real-time Eye AF & animal AF | Hybrid phase-detect / contrast-detect AF, face detection | |
| Stabilisation | 5-axis IBIS, 5 stops | None | |
| Burst Rate | 10fps with AF/AE tracking | 6fps | ↓ |
| Battery Life | ~710 shots (CIPA) | ~400 shots (CIPA) | ↓ |
| Weight | 565g (body, battery, card) | 224g (body only) | ↑ |
| Weather Sealed | Yes | No | ↓ |
| Viewfinder | EVF, 2.36M dots, 0.78× magnification | None | |
| Screen | 3.0" tilting touchscreen, 921k dots | 3.0" flip-up touchscreen, 921k dots | |
| Mount | Sony E-mount | Sony E-mount | |
| Memory Cards | Dual SD (UHS-II slot 1, UHS-I slot 2) | Single SD / MemoryStick PRO Duo slot |
Compare side-by-side
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