Sigma fpvs Sony A9 III
Sigma
Sigma fp (2019)
Starting from £1499 new
Best for Creative filmmakers & experimental photographers
View Sigma fp
Sony
Sony A9 III (2023)
Starting from £5999 new
Best for Sports & action professionals
View Sony A9 III
GearScore™ Verdict — Which should you buy?
Creative Filmmakers & Experimental Photographers — Sigma fp (2019): The smallest full-frame camera in the world — Cinema DNG RAW and L-mount flexibility in a pocket-sized body that rewards creative shooters.
Sports & Action Professionals — Sony A9 III (2023): A paradigm-shifting camera — the global shutter eliminates every rolling shutter limitation that has constrained action photography for years.
Who should buy what
Sigma fp (2019)
- Filmmakers who want the world's smallest full-frame camera as a B or C camera
- Experimental photographers who want to build a unique, modular setup
- L-mount photographers who want an ultra-compact full-frame body
- Anyone who wants a conversation-starting camera that delivers serious results
Sony A9 III (2023)
- Professional sports photographers who need zero blackout and 120fps burst
- Wildlife photographers who demand the most advanced Sony AF available
- Photojournalists who need flash sync at any shutter speed
- A9 II owners upgrading to the world's first full-frame global shutter
Quick take: The sigma fp is the most affordable; only the sony a9 iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Sigma fp (2019) | Sony A9 III (2023) |
|---|---|---|
| Price | £1,499 | £5,999 |
| Sensor | 24.6MP full-frame Bayer CMOS | 24.6MP full-frame Exmor RS CMOS (global shutter) |
| Resolution | 24.6MP | 24.6MP |
| Video | 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p | 4K/120p, 4K/60p, 1080p/240p |
| Autofocus | Contrast-detect AF with face/eye detection | AI subject recognition AF, 759-point phase-detect |
| Stabilisation | None (lens-based only) | 8-stop IBIS |
| Burst Rate | 18fps electronic | 120fps blackout-free electronic |
| Battery Life | 200 shots (CIPA) | 530 shots (CIPA) |
| Weight | 422g body only | 703g body only |
| Dimensions | 112.6 × 69.9 × 45.3mm | 136.1 × 96.9 × 82.9mm |
| Weather Sealed | No | Yes |
| Viewfinder | None | 0.64" Quad-XGA OLED EVF, 9.44M dots |
| Screen | 3.15" fixed touchscreen | 3.2" fully articulating touchscreen |
| Mount | Leica L-mount | Sony FE (E-mount) |
| Memory Cards | Single SD UHS-II + CFexpress Type B (via adapter) | Dual CFexpress Type A / SD UHS-II |
| Connectivity | USB-C 3.1, Wi-Fi, Bluetooth | USB-C 3.2, HDMI A, Wi-Fi 6, Bluetooth 5.3 |
Suitability by genre
| Genre | Sigma fp | Sony A9 III |
|---|---|---|
| Vlogging & Video | ||
| Street | — | |
| Travel | ||
| Portrait | ||
| Landscape | — | |
| Sports & Action | ||
| Wildlife | — | |
| Wedding & Events | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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Camera family history