BFvs A7R II
Sigma
BF (2025)
Starting from £1799 new
Best for Photographers who want to strip back every distraction
View BF
Sony
A7R II (2015)
Starting from £799 new
Best for Portrait, landscape & studio photography
View A7R II
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.
Portrait, Landscape & Studio Photography — A7R II (2015): The A7R II transformed the A7R series — adding IBIS, 4K video, BSI sensor tech, and phase-detect AF in one generation. A landmark Sony camera.
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
A7R II (2015)
- Landscape and architecture photographers who want 42MP with IBIS for handheld shooting
- Portrait and studio photographers who need high resolution with improved AF reliability
- Sony FE system users who want a capable high-resolution body at a used price
- A7R I owners who need the stabilisation, 4K, and improved AF the original lacked
Quick take: The a7r ii has the highest resolution at 42mp; the a7r ii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | BF (2025) | A7R II (2015) |
|---|---|---|
| Price | £1,799 | £799 |
| Sensor | 24MP full-frame BSI CMOS | 42.4MP Full-Frame BSI CMOS Exmor R |
| Resolution | 24.0MP | 42.4MP |
| Video | 4K/30p, 1080p/60p | 4K/30p (S35 or full-frame), 1080p/120p |
| Autofocus | Phase-detect AF — face and eye detection | 399 phase-detect + 25 contrast-detect AF points, face detection |
| Stabilisation | 5-axis IBIS — 7 stops | IBIS — 5-axis, up to 4.5 stops (first A7R with IBIS) |
| Burst Rate | 9fps electronic | 5fps |
| Battery Life | ~400 shots (CIPA) | ~290 shots (CIPA) |
| Weight | 427g body only | 625g (with battery and card) |
| Dimensions | 127.0 × 75.0 × 45.0mm | 126.9 × 95.7 × 60.3mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.75× 3.68M-dot | EVF, OLED 2.36M dots, 0.78× magnification |
| Screen | 3.15" fully articulating touchscreen — primary interface | 3.0" tilting LCD, 1.23M dots (no touch) |
| Mount | L-mount (Leica/Panasonic/Sigma) | Sony FE (full-frame E-mount) |
| Memory Cards | Single UHS-II SD slot | Single SD UHS-I slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB, Wi-Fi, NFC |
Suitability by genre
| Genre | BF | A7R II |
|---|---|---|
| Street | — | |
| Travel | ||
| Portrait | ||
| Landscape | ||
| Sports | — | |
| Vlogging & Video | ||
| Architecture | — | |
| Sports & Action | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with BF
Camera family history