Sigma
BF
Minimalist full-frame L-mount body with large top screen and unique design.
$1,999
Last updated May 2026
Key specs at a glance
Resolution
24.2 MP
Sensor
Full Frame
ISO max
25,600
Burst
15 fps
4K
60 fps
IBIS
6-stop
Weight
720 g
Battery
640 shots
Sensor size
Sigma BF
36 × 24 mm · Full Frame
864 mm² area
Body size
Sigma BF
138 × 98 × 88 mm
720 g (1.59 lb / 25.40 oz)
138 × 98 × 88 mm · 720 g (1.59 lb / 25.40 oz)
Best for
Use-case scores
Scored algorithmically from verified specs. 10 = best in class.
Portrait
Good7.5/ 10
- · 24.2MP — solid resolution
- · Full-frame sensor — shallow depth of field for subject isolation
Sports & Action
Good6.0/ 10
- · 15fps burst — fast action ready
- · Pre-Capture records before you press shutter
Video & Hybrid
Good6.0/ 10
- · 4K recording
- · 4K 60p smooth motion
Landscape
Good7.0/ 10
- · Full-frame sensor — wider dynamic range
- · Weather sealed for outdoor conditions
Travel
Good7.5/ 10
- · 720g — manageable for travel
- · 640 shots/charge — all-day shooting
Wildlife
Excellent8.0/ 10
- · Bird AF subject recognition
- · Animal subject recognition
Vlogging
Fair5.5/ 10
- · 4K 60p for smooth handheld vlogs
- · IBIS reduces handheld shake
Pros
- ✓ Unique design
- ✓ Full-frame
- ✓ L-mount
Cons
- – No IBIS
- – Niche ergonomics
- – Limited controls
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Full specifications
Verified specs · Sigma BF
Sensor
Resolution24.2 MP
Sensor typeFull Frame CMOS
Sensor size36.0 × 24.0 mm
AA filterYes
Processor
ProcessorImage processor
ISO
ISO min (native)100
ISO max (native)25,600
ISO max (expanded)102,400
Shutter
Shutter typeMechanical + Electronic
Max mechanical speed1/8000 sec
Max electronic speed1/16000 sec
Autofocus
AF systemPhase-detect AF
AF points / zones49
AF frame coverage90 %
AF low-light limit-5 EV
Eye AFYes
Animal / bird AFYes
Subject recognitionHuman, Animal, Bird, Vehicle
Burst
Burst (mechanical)6 fps
Burst (electronic)15 fps
Pre-Capture / Pre-ReleaseYes
RAW buffer depth60 frames
Video
Max resolution4K UHD
4K max frame rate60 fps
Max video bit rate150 Mbps
Internal RAW videoNo
Log profileStandard profiles
CodecsH.265, H.264
Stabilization
In-body stabilizationYes
IBIS effectiveness6 stops
Body
Weight720 g
Dimensions (W×H×D mm)138 × 98 × 88 mm
Weather sealingYes
Battery
BatteryLP-E6NH
Battery life (CIPA)640 shots
Storage
Card slots2
Card typesSD UHS-II
Viewfinder
Viewfinder typeOLED EVF
EVF resolution2,360,000 dots
EVF magnification0.78 ×
EVF refresh rate120 Hz
LCD
LCD size3 in
LCD typeVari-angle
TouchscreenYes
Connectivity
USBUSB-C 3.2 Gen 2
HDMIMicro HDMI (Type D)
Wi-FiYes
Wi-Fi standardWi-Fi 5 (802.11ac)
BluetoothYes
Microphone jack (3.5mm)Yes
Headphone jack (3.5mm)Yes
Lens Mount
Lens mountL-Mount