Upgrade Guide
Sony A7 IV→Sony A9 III
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the A7 IV. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the A9 III
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StabilisationImproved — 8-stop IBIS
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Burst rate120fps blackout-free electronic vs 10fps mechanical, 30fps electronic
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Generation2 years newer (2023 vs 2021)
Unchanged or similar
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Resolution25MP (down from 33MP — optimised for low light)
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 | A7 IV | A9 III | |
|---|---|---|---|
| Portrait | +0.3 | ||
| Street | +0.1 | ||
| Travel | +0.1 | ||
| Wedding & Events | +0.6 | ||
| Vlogging & Video | +0.3 | ||
| Filmmaking | +1.0 | ||
| Documentary | +0.8 | ||
| Sports & Action | +1.9 | ||
| Landscape | -0.2 | ||
| Wildlife | +1.4 | ||
| Casual | — | ||
| Food | +0.3 | ||
| Macro | +0.3 | ||
| Architecture | -0.2 | ||
| Astrophotography | -0.5 |
Full spec comparison
| Spec | A7 IV | A9 III | |
|---|---|---|---|
| Price | £1,799 | £5,699 | |
| Released | 2021 | 2023 | ↑ |
| Sensor | 33MP Full-frame BSI Exmor R CMOS | 24.6MP full-frame Exmor RS CMOS (global shutter) | |
| Resolution | 33MP | 25MP | ↓ |
| Video | 4K/60p oversampled, 10-bit internal, S-Log3, S-Cinetone | 4K/120p, 4K/60p, 1080p/240p | |
| Autofocus | 759-point phase-detect, AI subject recognition | AI subject recognition AF, 759-point phase-detect | |
| Stabilisation | 5-axis IBIS, 5.5 stops | 8-stop IBIS | |
| Burst Rate | 10fps mechanical, 30fps electronic | 120fps blackout-free electronic | ↑ |
| Battery Life | ~580 shots (CIPA) | 530 shots (CIPA) | ↓ |
| Weight | 659g (body only) | 703g (body only) | ↓ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | EVF, 3.69M dots, 0.78× magnification | 0.64" Quad-XGA OLED EVF, 9.44M dots | |
| Screen | 3.0" vari-angle touchscreen | 3.2" fully articulating touchscreen | |
| Mount | Sony FE (full-frame E-mount) | Sony FE (E-mount) | |
| Memory Cards | Slot 1 CFexpress Type A / SD UHS-II, slot 2 SD UHS-II | Dual CFexpress Type A / SD UHS-II |
Compare side-by-side
⚖️ Compare these cameras
See A7 IV and A9 III 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 A9 III against your specific genres — not just specs.
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