Sigma fpvs A1 II
Sigma
Sigma fp (2019)
Starting from £1499 new
Best for Creative filmmakers & experimental photographers
View Sigma fp
Sony
A1 II (2025)
Starting from £6500 new
Best for Professional sports, wildlife & high-resolution studio work
View A1 II
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.
Professional Sports, Wildlife & High-Resolution Studio Work — A1 II (2025): The most complete camera ever made — 50MP, 30fps, 8K, and the world's best EVF in a single flagship body.
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
A1 II (2025)
- Professional sports and wildlife photographers who need 30fps, 50MP, and the best AF available
- Commercial and advertising photographers who demand 50MP resolution alongside pro video specs
- Photojournalists who need a single body capable of handling every assignment
- Sony system shooters ready to invest in the absolute best
Quick take: The a1 ii has the highest resolution at 50mp; the sigma fp is the most affordable; only the a1 ii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Sigma fp (2019) | A1 II (2025) |
|---|---|---|
| Price | £1,499 | £6,500 |
| Sensor | 24.6MP full-frame Bayer CMOS | 50.1MP full-frame stacked BSI CMOS |
| Resolution | 24.6MP | 50.1MP |
| Video | 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p | 8K/30p, 4K/120p 10-bit, 4K/240p super slow-motion |
| Autofocus | Contrast-detect AF with face/eye detection | AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train |
| Stabilisation | None (lens-based only) | 8.5-stop IBIS (with in-lens OSS) |
| Burst Rate | 18fps electronic | 30fps electronic (with full AF/AE), 10fps mechanical |
| Battery Life | 200 shots (CIPA) | ~530 shots (CIPA) |
| Weight | 422g body only | 743g body only |
| Dimensions | 112.6 × 69.9 × 45.3mm | 136.1 × 96.9 × 82.9mm |
| Weather Sealed | No | Yes |
| Viewfinder | None | EVF 0.9× 9.44M-dot — the highest resolution EVF available |
| Screen | 3.15" fixed touchscreen | 3.2" fully articulating touchscreen, 2.1M dots |
| Mount | Leica L-mount | Sony E-mount (full-frame) |
| Memory Cards | Single SD UHS-II + CFexpress Type B (via adapter) | Dual CFexpress Type A / SD UHS-II slots |
| Connectivity | USB-C 3.1, Wi-Fi, Bluetooth | USB-C 3.2 Gen 2, Wi-Fi 6GHz, Bluetooth 5.3, HDMI full-size |
Suitability by genre
| Genre | Sigma fp | A1 II |
|---|---|---|
| Vlogging & Video | ||
| Street | — | |
| Travel | ||
| Portrait | ||
| Landscape | ||
| Sports & Action | — | |
| Sports | — | |
| Wildlife | — |
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