Sigma
BF 2025
Best for Photographers who want to strip back every distraction
£1999
new today at Wex Photo Video
Decision tools · Compare
BF vs A7C II
Quick take: The A7C II has the highest resolution at 33MP; the A7C II is the most affordable.
16 specs side by side·16 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more
Verdictwhich should you buy?
BF — Photographers Who Want To Strip Back Every Distraction: The most radical camera in years — no dials, no buttons, just a flat aluminium body and total creative minimalism.
A7C II — Full-Frame Hybrid: 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)
is the right camera for you if…
- 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)
is the right camera for you if…
- 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
Full specificationsthe better value in each row is highlighted
| Specification | BFSigma · 2025 | A7C IISony · 2023 |
|---|---|---|
| Price | £1,999 | £1,799Best |
| Sensor | 24MP full-frame BSI CMOS | 33MP Full-frame Exmor R BSI CMOS |
| Resolution | 24.0MP | 33.0MPBest |
| Video | 6K/30p, 4K/30p, 1080p/120p, L-Log | 4K/60p oversampled, S-Log3, 10-bit internal |
| Autofocus | Phase-detect AF — face and eye detection | 759-point phase-detect, AI subject recognition |
| Stabilisation | No IBIS (electronic IS for video) | 5-axis IBIS, 7.0 stops |
| Burst Rate | 9fps electronic | 10fps mechanical, 30fps electronicBest |
| Battery Life | ~400 shots (CIPA) | ~530 shots (CIPA)Best |
| Weight | 427g (body only)Best | 514g (body only) |
| Dimensions | 127.0 × 75.0 × 45.0mm | 124.0 × 71.1 × 63.4mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | None: rear screen only | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.15" fixed touchscreen — primary interface | 3.0" vari-angle touchscreen |
| Mount | L-mount (Leica/Panasonic/Sigma) | Sony FE (full-frame E-mount) |
| Memory Cards | 230GB internal storage only — no card slot | Single SD UHS-II slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C (3.2), Bluetooth, Wi-Fi |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
BF
A7C II
Portrait
6.4/10
8.3/10
Street
6.6/10
7.9/10
Travel
6.5/10
7.2/10
Wedding & Events
5.0/10
7.1/10
Filmmaking
5.9/10
7.1/10
Documentary
6.9/10
7.8/10
Sports & Action
5.8/10
7.3/10
Landscape
6.1/10
6.9/10
Wildlife
6.3/10
8.0/10
Casual
5.5/10
5.9/10
Food
6.0/10
8.0/10
Macro
4.9/10
7.7/10
Architecture
5.5/10
7.0/10
Astrophotography
6.4/10
7.4/10
Fun & simple
5.0/10
—
Vlogging & Video
—
6.8/10
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
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