BFvs A1 II
Sigma
BF (2025)
Starting from £1799 new
Best for Photographers who want to strip back every distraction
View BF
VS
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?
Photographers Who Want To Strip Back Every Distraction — BF (2025): The most radical camera in years — no dials, no buttons, just a flat aluminium body and total creative minimalism.
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
BF (2025)
- Photographers who find camera menus and dials a distraction from the creative process
- L-mount system users who want the lightest, most minimal full-frame body available
- Design enthusiasts who value the object quality and philosophy as much as the output
- Sigma fp/fp L users ready for a more radical step toward minimal photography
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 bf is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | BF (2025) | A1 II (2025) |
|---|---|---|
| Price | £1,799 | £6,500 |
| Sensor | 24MP full-frame BSI CMOS | 50.1MP full-frame stacked BSI CMOS |
| Resolution | 24.0MP | 50.1MP |
| Video | 4K/30p, 1080p/60p | 8K/30p, 4K/120p 10-bit, 4K/240p super slow-motion |
| Autofocus | Phase-detect AF — face and eye detection | AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train |
| Stabilisation | 5-axis IBIS — 7 stops | 8.5-stop IBIS (with in-lens OSS) |
| Burst Rate | 9fps electronic | 30fps electronic (with full AF/AE), 10fps mechanical |
| Battery Life | ~400 shots (CIPA) | ~530 shots (CIPA) |
| Weight | 427g body only | 743g body only |
| Dimensions | 127.0 × 75.0 × 45.0mm | 136.1 × 96.9 × 82.9mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.75× 3.68M-dot | EVF 0.9× 9.44M-dot — the highest resolution EVF available |
| Screen | 3.15" fully articulating touchscreen — primary interface | 3.2" fully articulating touchscreen, 2.1M dots |
| Mount | L-mount (Leica/Panasonic/Sigma) | Sony E-mount (full-frame) |
| Memory Cards | Single UHS-II SD slot | Dual CFexpress Type A / SD UHS-II slots |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C 3.2 Gen 2, Wi-Fi 6GHz, Bluetooth 5.3, HDMI full-size |
Suitability by genre
| Genre | BF | A1 II |
|---|---|---|
| Street | — | |
| Travel | ||
| Portrait | ||
| Landscape | ||
| Sports | ||
| Vlogging & Video | ||
| Wildlife | — |
More comparisons with BF
Camera family history