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 A6100
Quick take: The A6100 has the highest resolution at 24MP; the A6100 is the most affordable; only the BF is weather sealed.
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.
A6100 — Beginner, Family, Travel: Best autofocus in its class for the price.
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
A6100 (2019)
is the right camera for you if…
- First-time mirrorless buyers who want solid AF
- Families stepping up from a smartphone
Full specificationsthe better value in each row is highlighted
| Specification | BFSigma · 2025 | A6100Sony · 2019 |
|---|---|---|
| Price | £1,999 | £649Best |
| Sensor | 24MP full-frame BSI CMOS | APS-C Exmor CMOS |
| Resolution | 24.0MP | 24.2MPBest |
| Video | 6K/30p, 4K/30p, 1080p/120p, L-Log | 4K 30fps |
| Autofocus | Phase-detect AF — face and eye detection | 425-point phase-detect, real-time tracking |
| Stabilisation | No IBIS (electronic IS for video) | No stabilisation |
| Burst Rate | 9fps electronic | 11fpsBest |
| Battery Life | ~400 shots (CIPA) | 420 shots (CIPA)Best |
| Weight | 427g (body only) | 396g (body only)Best |
| Dimensions | 127.0 × 75.0 × 45.0mm | 119.9 × 66.9 × 59.4mm |
| Weather Sealed | YesBest | Not weather sealed |
| Viewfinder | None: rear screen only | EVF 0.39" 1.44M-dot |
| Screen | 3.15" fixed touchscreen — primary interface | 3.0" tilting touchscreen, 921k-dot |
| Mount | L-mount (Leica/Panasonic/Sigma) | Sony E-Mount |
| Memory Cards | 230GB internal storage only — no card slot | SD UHS-I / Memory Stick |
| Connectivity | USB-C, Wi-Fi, Bluetooth | Wi-Fi, Bluetooth 4.1, Micro USB, Micro HDMI |
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
A6100
Portrait
6.4/10
6.7/10
Street
6.6/10
7.3/10
Travel
6.5/10
6.2/10
Wedding & Events
5.0/10
5.1/10
Filmmaking
5.9/10
4.9/10
Documentary
6.9/10
5.2/10
Sports & Action
5.8/10
6.5/10
Landscape
6.1/10
4.9/10
Wildlife
6.3/10
6.9/10
Casual
5.5/10
6.4/10
Food
6.0/10
6.2/10
Macro
4.9/10
5.2/10
Architecture
5.5/10
5.5/10
Astrophotography
6.4/10
6.0/10
Fun & simple
5.0/10
—
Vlogging & Video
—
5.9/10
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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