Sigma BF
Mirrorless · L-Mount · Announced February 2025
Official site on sigma-global.com (opens the maker's site in a new tab)
Used from £1,425
Lowest new
£1,869
at Harrison Cameras
Lowest used/refurb
£1,425
at Harrison Cameras
24% under new
- Full frame sensor: 24.6 MP, BSI CMOS
- In-body stabilisation: None
- Top video mode: 6K, 4K up to 30p
- Subject-detection AF: Human, animal
- Viewfinder: None
- Burst shooting: 8 fps, Electronic shutter
- Weight with battery: 446 g
- Weather sealing: Sealed
Where to buy the BF in United Kingdom
Harrison Cameras
Used · Body only · In stock
L-Mount version
£1,425
Harrison Cameras
New · Body only · In stock
L-Mount version
£1,869
Harrison Cameras
New · Body only · In stock
L-Mount version
£1,869
Sorted by price, cheapest in-stock first. Some links earn us a commission; it never changes the order.
Price around the world
Cheapest in Australia: about 16% under the UK price before shipping and import tax.
Prices are in each market's own currency. Under each: ≈ in GBP at today's exchange rate.
| Market | Lowest new | Lowest used/refurb |
|---|---|---|
| United States | $2,199≈ £1,649 | $1,978.95≈ £1,484 |
| United Kingdom(you) | £1,869 | £1,425 |
| Europe | — | — |
| AustraliaCheapest | A$2,999≈ £1,565 | A$2,999≈ £1,565 |
| Singapore | S$2,988≈ £1,752 | — |
Each price is in its own currency, as the store charges it. The ≈ figures are approximate, at today's exchange rate (ECB reference rates, 2026-10-16), rounded, and leave out shipping, import duty, GST/VAT and card fees. A camera bought abroad may not carry a local warranty: see grey-market cameras before you buy.
Price history
Price history starts the day we first price this product here; a chart appears after the second day.
Used: what it should be worth
We've seen used BF prices on 1 day so far. A "should be worth" value appears after a week of used prices.
| Month | Cheapest | Typical | Highest | Days seen |
|---|---|---|---|---|
| Oct 2026 | £1,425 | £1,425 | £1,425 | 1 |
From used and refurbished asking prices at the stores we track, checked every few hours. Confirmed eBay sale prices will be added once eBay grants us access to its sold-listings data.
Low light & noise
5.9 µm pixels
24.6 MP on a full frame sensor, ISO up to 102,400
Bigger pixels gather more light each, so they tend to show less noise at high ISO, but sensor design matters as much. For real noise at ISO 6400, these sites measure it:
- Photons to Photos: dynamic range vs ISO ↗Photographic dynamic range measured at every ISO, bodies on one chart
- Photons to Photos: noise vs ISO ↗Read noise at every ISO from lab tests: lower is cleaner in the shadows
- DPReview studio scene ↗The same scene shot by each camera at the ISO you pick, side by side
- DPReview reviews ↗Full reviews with high-ISO samples
- Low-light video tests ↗Real-world high-ISO footage on YouTube
How it stacks up
- 446 g — lighter than 96% of the full frame mirrorless cameras we list
- 24.6 MP — more resolution than 55% of the full frame mirrorless cameras we list
Compare the BF
Suggested kit
The body and lenses that fit it natively, picked by focal range and price from our catalog. Lowest new price today in United Kingdom.
| Sigma BFThe body. | £1,869 |
| Sigma 28-70mm F2.8 DG DN | ContemporarySigma's own standard zoom at a price that suits this body: 28–70mm covers rooms, street and portraits. | £749 |
| Sigma 50mm F1.4 DG DN | ArtA bright f/1.4 prime for low light and soft backgrounds, at 50mm. | £849 |
| Sigma 70-200mm F2.8 DG DN OS | SportsReaches 70–200mm for sport, wildlife and faraway detail. | £1,320 |
| Total | £4,787 |
Lenses for the BF
All 31 L-Mount lenses →Standard
Wide
Ultra-wide
Telephoto
Super-telephoto
Macro
Accessories for the BF
All accessories →Speedlights & flashes
Used Sigma EF-610 DG ST Flash Canon Fit
Cheapest flash for this system at Harrison Cameras · Used
£30
Reviews
Read what reviewers found. Each link opens that site's search for the BF.
- Digital Camera WorldReviews and buying guides
- Camera LabsIn-depth reviews with sample images
- Imaging ResourceLab and field tests
- Amateur PhotographerReviews and verdicts
- YouTubeVideo reviews
- Reddit r/photographyOwners' opinions
BF specifications
Overview
- Type
- Mirrorless
- Announced
- Feb 2025
- US launch price
- $1,999
- Lens
- Interchangeable
Sensor & image
- Sensor size
- Full frame
- Sensor type
- BSI CMOS
- Resolution
- 24.6 MP
- Native ISO
- 100–102,400
- In-body stabilisation
- No
Speed & autofocus
- Burst (mechanical)
- —
- Burst (electronic)
- 8 fps
- Fastest shutter (mech.)
- —
- Fastest shutter (elec.)
- 1/25,600s
- AF points
- —
- Subject detection
- Human, Animal
Video
- Max resolution
- 6K
- 4K frame rate
- 30p
- 10-bit internal
- —
- Internal raw video
- —
- Mic input
- No
- Headphone jack
- No
Viewfinder & screen
- Viewfinder
- None
- Rear screen
- 3.15", 2.10M dots
- Screen articulation
- Fixed
- Touchscreen
- Yes
Body & battery
- Weight (with battery)
- 446 g
- Dimensions (W×H×D)
- 130.1 × 72.8 × 36.8 mm
- Weather sealed
- Yes
- Battery (CIPA shots)
- 260
- Card slots
- 0 · 230GB internal memory
- USB-C
- Yes
- Built-in flash
- No
- Wi-Fi / Bluetooth
- —
Discussion · BF
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