BFvs A6100
Sigma
BF (2025)
Starting from £1799 new
Best for Photographers who want to strip back every distraction
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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.
Beginner, Family, Travel — A6100 (2019): Best autofocus in its class for the price.
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
A6100 (2019)
- First-time mirrorless buyers who want solid AF
- Families stepping up from a smartphone
Quick take: The a6100 has the highest resolution at 24mp; the a6100 is the most affordable; only the bf is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | BF (2025) | A6100 (2019) |
|---|---|---|
| Price | £1,799 | £549 |
| Sensor | 24MP full-frame BSI CMOS | APS-C Exmor CMOS |
| Resolution | 24.0MP | 24.2MP |
| Video | 4K/30p, 1080p/60p | 4K 30fps |
| Autofocus | Phase-detect AF — face and eye detection | 425-point phase-detect, real-time tracking |
| Stabilisation | 5-axis IBIS — 7 stops | None |
| Burst Rate | 9fps electronic | 11fps |
| Battery Life | ~400 shots (CIPA) | 420 shots (CIPA) |
| Weight | 427g body only | 396g (body only) |
| Dimensions | 127.0 × 75.0 × 45.0mm | 119.9 × 66.9 × 59.4mm |
| Weather Sealed | Yes | No |
| Viewfinder | EVF 0.75× 3.68M-dot | EVF 0.39" 1.44M-dot |
| Screen | 3.15" fully articulating touchscreen — primary interface | 3.0" tilting touchscreen, 921k-dot |
| Mount | L-mount (Leica/Panasonic/Sigma) | Sony E-Mount |
| Memory Cards | Single UHS-II SD slot | SD UHS-I / Memory Stick |
| Connectivity | USB-C, Wi-Fi, Bluetooth | Wi-Fi, Bluetooth 4.1, Micro USB, Micro HDMI |
Suitability by genre
| Genre | BF | A6100 |
|---|---|---|
| Street | — | |
| Travel | — | |
| Portrait | — | |
| Landscape | — | |
| Sports | — | |
| Vlogging & Video | — |
More comparisons with BF
Camera family history