Upgrade Guide
Sony Sony FX5→Sony A9 III
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the Sony FX5. 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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Resolution25MP vs 17MP (+8MP)
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Burst rate120fps blackout-free electronic vs 10fps
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Battery life530 shots (CIPA) vs ~105 min actual recording, ~170 min continuous (LCD)
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 FX5 | A9 III | |
|---|---|---|---|
| Portrait | +1.6 | ||
| Street | +1.3 | ||
| Travel | +0.3 | ||
| Wedding & Events | +1.5 | ||
| Vlogging & Video | +0.4 | ||
| Filmmaking | -0.5 | ||
| Documentary | -0.1 | ||
| Sports & Action | +2.6 | ||
| Landscape | +1.4 | ||
| Wildlife | +2.4 | ||
| Casual | +0.2 | ||
| Food | +0.5 | ||
| Macro | +2.4 | ||
| Architecture | +0.5 | ||
| Astrophotography | +0.1 |
Full spec comparison
| Spec | Sony FX5 | A9 III | |
|---|---|---|---|
| Price | £4,699 | £5,999 | |
| Released | 2026 | 2023 | ↓ |
| Sensor | 16.6MP full-frame stacked Exmor RS CMOS | 24.6MP full-frame Exmor RS CMOS (global shutter) | |
| Resolution | 17MP | 25MP | ↑ |
| Video | 5K/60p open-gate, 4K/120p, internal RAW/X-OCN, 10-bit Log, triple base ISO | 4K/120p, 4K/60p, 1080p/240p | |
| Autofocus | AI-powered hybrid phase-detect AF (759 points) with subject tracking | AI subject recognition AF, 759-point phase-detect | |
| Stabilisation | IBIS with Dynamic Active Mode | 8-stop IBIS | |
| Burst Rate | 10fps | 120fps blackout-free electronic | ↑ |
| Battery Life | ~105 min actual recording, ~170 min continuous (LCD) | 530 shots (CIPA) | ↑ |
| Weight | 734g (with battery and card) | 703g (body only) | ↑ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | Optional detachable EVF (DVF-EL1), OLED | 0.64" Quad-XGA OLED EVF, 9.44M dots | |
| Screen | Fully articulating touchscreen (4-axis arm) | 3.2" fully articulating touchscreen | |
| Mount | Sony E-mount | Sony FE (E-mount) | |
| Memory Cards | CFexpress Type A + SDXC (dual) | Dual CFexpress Type A / SD UHS-II |
Compare side-by-side
⚖️ Compare these cameras
See Sony FX5 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.
Other upgrades from the Sony FX5
Camera family history