BFvs A7C II
Sigma
BF (2025)
Starting from £1799 new
Best for Photographers who want to strip back every distraction
View BF
VS
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.
Full-Frame Hybrid — A7C II (2023): Full-frame AI autofocus in the most compact body available — the best camera under £1,500 for hybrid shooters.
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
A7C II (2023)
- Travel photographers who want full-frame quality in the most compact body
- Hybrid shooters who need full-frame video and IBIS in a small package
- A7C owners looking for a significant AF and video upgrade
- Portrait and wedding photographers who want a discreet full-frame backup
Quick take: The a7c ii has the highest resolution at 33mp; the a7c ii is the most affordable; only the bf is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | BF (2025) | A7C II (2023) |
|---|---|---|
| Price | £1,799 | £1,499 |
| Sensor | 24MP full-frame BSI CMOS | 33MP Full-frame Exmor R BSI CMOS |
| Resolution | 24.0MP | 33.0MP |
| Video | 4K/30p, 1080p/60p | 4K/60p oversampled, S-Log3, 10-bit internal |
| Autofocus | Phase-detect AF — face and eye detection | 759-point phase-detect, AI subject recognition |
| Stabilisation | 5-axis IBIS — 7 stops | 5-axis IBIS, 7.0 stops |
| Burst Rate | 9fps electronic | 10fps mechanical, 30fps electronic |
| Battery Life | ~400 shots (CIPA) | ~530 shots (CIPA) |
| Weight | 427g body only | 514g body only |
| Dimensions | 127.0 × 75.0 × 45.0mm | 124.0 × 71.1 × 63.4mm |
| Weather Sealed | Yes | No |
| Viewfinder | EVF 0.75× 3.68M-dot | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.15" fully articulating touchscreen — primary interface | 3.0" vari-angle touchscreen |
| Mount | L-mount (Leica/Panasonic/Sigma) | Sony FE (full-frame E-mount) |
| Memory Cards | Single UHS-II SD slot | Dual slots: SD UHS-II + CFexpress Type A |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C (3.2), Bluetooth, Wi-Fi |
Suitability by genre
| Genre | BF | A7C II |
|---|---|---|
| Street | ||
| Travel | — | |
| Portrait | ||
| Landscape | ||
| Sports | — | |
| Vlogging & Video | ||
| Wedding & Events | — | |
| Sports & Action | — |
More comparisons with BF
Camera family history