Sigma
BF 2025
Best for Photographers who want to strip back every distraction
£1869
new today at Wex Photo Video
Decision tools · Compare
BF vs Sony FX2
Quick take: The Sony FX2 has the highest resolution at 33MP; the BF 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.
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
Full specificationsthe better value in each row is highlighted
| Specification | BFSigma · 2025 | Sony FX2Sony · 2025 |
|---|---|---|
| Price | £1,869Best | £2,499 |
| Sensor | 24MP full-frame BSI CMOS | 33MP full-frame Exmor R CMOS |
| Resolution | 24.0MP | 33.0MPBest |
| Video | 6K/30p, 4K/30p, 1080p/120p, L-Log | 7K-oversampled 4K/30p full-frame, 4K/60p (Super 35 crop), 10-bit, dual base ISO Log, external 16-bit RAW via HDMI |
| Autofocus | Phase-detect AF — face and eye detection | Hybrid phase-detect AF with subject tracking and auto-framing |
| Stabilisation | No IBIS (electronic IS for video) | Dynamic Active IBIS |
| Burst Rate | 9fps electronic | 10fpsBest |
| Battery Life | ~400 shots (CIPA) | 600 shots (CIPA); ~100 min continuous videoBest |
| Weight | 427g (body only)Best | 679g (body only) |
| Dimensions | 127.0 × 75.0 × 45.0mm | — |
| Weather Sealed | Yes | Yes |
| Viewfinder | None: rear screen only | Optional clip-on EVF, 3.68M dots |
| Screen | 3.15" fixed touchscreen — primary interface | Fully articulating touchscreen |
| Mount | L-mount (Leica/Panasonic/Sigma) | Sony E-mount |
| Memory Cards | 230GB internal storage only — no card slot | Slot 1 CFexpress Type A / SD UHS-II, slot 2 SD UHS-II |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, full-size HDMI, Wi-Fi, Bluetooth |
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
Sony FX2
Portrait
6.4/10
7.0/10
Street
6.6/10
5.3/10
Travel
6.7/10
6.4/10
Wedding & Events
5.0/10
6.8/10
Filmmaking
5.9/10
8.0/10
Documentary
6.9/10
7.7/10
Sports & Action
5.8/10
6.4/10
Landscape
6.1/10
5.7/10
Wildlife
6.3/10
6.6/10
Casual
5.5/10
5.1/10
Food
6.0/10
7.5/10
Macro
4.9/10
5.4/10
Architecture
5.5/10
6.8/10
Astrophotography
6.4/10
6.3/10
Fun & simple
4.5/10
—
Vlogging & Video
—
6.0/10
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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