Specification :
SIGMA BF THE BEAUTY OF A SIMPLE THING
With the Sigma BF, we present an uncompromising new vision for the digital camera. Stripped to the essence but packed with power, innovative yet rooted in the origins of photography, it is designed to accompany you throughout your day and to capture the spontaneous beauty of everyday life. The BF balances performance with simplicity and returns the focus to what matters most: your photographs.
RADICAL SIMPLICITY
The Sigma BF’s most important feature is its simplicity. We wanted to create the easiest camera to use, inspired by the humble beginnings of the camera obscura. While the lens remains the soul of photography, the camera still profoundly shapes the images you take – directly, indirectly, even subconsciously. Without compromising on features or performance, the BF’s design cuts out everything that distracts from your interaction with the image. From its aluminum unibody to its simplified controls and streamlined menu, the BF embodies a pure photographic experience free of frustration.
SEAMLESS INTERACTION
The Sigma BF represents a new, more intuitive way to use a camera. It is streamlined to make the act of photography as effortless as possible. We have replaced the shooting mode dial – itself a holdover from the days of film photography – with direct access to the five elements that decide the photograph. Shutter speed, aperture, ISO, EV compensation and color mode are all immediately available at the touch of a finger. The new Status Monitor displays the currently active setting, so the screen provides an unobstructed view of the subject.
CLEAR VIEW
The BF's high-resolution screen provides a distraction-free view of all necessary information – and nothing more. With one simple setting, it shows only the live view image, with the five key elements – shutter speed, aperture, ISO, EV compensation and color mode – displayed when you are ready to press The center button. All other options and settings are accessed via just three simple menu screens.
AT A GLANCE
The innovative Status Monitor displays the active setting, highlighting exactly what you need to know without distraction.
TACTILE CONTROL
With just three buttons and a dial pad, the BF's redesigned user interface makes adjustments instant and intuitive, leaving your attention on the scene and not the settings. The BF is the first mirrorless camera to feature pressure-sensitive haptic buttons*, resulting in minimal physical wear while still offering the precise and tactile sensation of conventional mechanical buttons.
ENDURING FORM
The BF is designed to last. It is the first camera in history* to feature a true unibody, with each camera carved from a single, solid block of aluminum ingot over the course of seven hours. The weight of its seamless all-metal body harmonizes perfectly with any attached lens, while its shape, button placement and precision-cut front texture guarantee secure handling.
DECEPTIVELY POWERFUL
Simplicity does not mean limitation. The Sigma BF is packed with advanced technology to expand your creative possibilities. Its powerful full-frame sensor delivers exceptional image quality, while the fast, reliable hybrid autofocus system keeps subjects in focus.
Type
Type
Interchangeable-lens Mirrorless Type Digital Camera
Memory Media
Internal Memory (Approx. 230 GB), USB Storage (for Backup)
Lens Mount
L-Mount
Image Sensor
Type
35 mm full-frame (35.9 mm x 23.9 mm) Back-illuminated CMOS sensor
Camera Effective Pixels / Total Pixels
Approx. 24.6 MP / Approx. 25.3 MP
Aspect Ratio
3:2
Still Image File Format
Lossless compression RAW (DNG) 14-bit / JPEG (Exif3.0) ,RAW(DNG) + JPEG: recording is possible
Image Aspect Ratio
[21:9], [16:9], [3:2], [A Size], [4:3], [6x7], [1:1]
File Size
RAW
6016 x 4012
JPEG
6016 x 4012
Crop
3840 x 2560 (Equivalent to Approx.1.5 times the focal length)
Movie Recording Format
Movie Format
MOV: H.264, H.265, L-Log
Audio Format
Linear PCM (4ch 48 kHz / 16-bit: Max)
Record Format / Frame rate
6K* (6K: 6016 x 3384) / 23.98, 25, 29.97 fps *Cannot be used in conjunction with EIS
UHD 4K / 23.98, 25, 29.97 fps
FHD / 23.98, 25, 29.97, 50, 59.94, 100, 119.88 fps
Continuous Shooting Enable Time
2 hours
Focus
AF System / Focus Mode
Image Plane Phase-Detection AF + Contrast detection system / Single AF, Continuous AF (with moving object prediction function), Manual Focus
AF Sensitivity Range / AF Mode
-5~18 EV (F1.4?ISO 100)/1-Point AF, Area AF
AF Lock
Half-press the shutter button
Other Focus Functions
Subject Tracking AF (Human + Animal, Human, Animal) , AF+MF, Full-time AF+MF, MF Magnification (Full Screen 2x / 4x / 8x) , Focus Peaking, Focus Ring Control (Non-linear, Linear)
Exposure Control
Metering System
Evaluative, Spot Metering
Metering Range
-7 ~ 20 EV (50 mm F1.4: ISO 100)
Still Shooting
Program AE, Shutter Speed Priority AE, Aperture Priority AE, Manual
*The above can be changed by setting each of Shutter Speed, Aperture, and ISO Sensitivity to Auto or Manual.
Movie Shooting
Program AE, Shutter Speed Priority AE, Aperture Priority AE, Manual
*The above can be changed by setting each of Shutter Speed, Aperture, and ISO Sensitivity to Auto or Manual.
ISO Sensitivity (Recommended exposure value)
Base ISO
[Still] ISO 320 [Movie] MOV: ISO 320, Log: ISO 1250
Settable Range
ISO 100-102400 / Expanded sensitivity ISO 6, 12, 25, 50
Exposure Compensation
±5 EV (in 1/3 stop increments)
AE Lock
Operated via touch
Exposure Bracket
3 shots, 5 shots stage exposure ±3 EV (1/3 Step, Standard→Underexposure→Overexposure) (Sequence changeable)
Exposure Assist
Brightness Level Monitor (Histogram) , Zebra Pattern, False Color
Image Stabilization System
Electronic Image Stabilization (EIS) for Video Only
White Balance
8 types
(Auto, Auto [Lighting Source Priority] , Incandescent, Fluorescent, Manual [50K steps] , Daylight, Overcast, Shade) , Custom 1-10 settings can be added , AWB lock function
Shutter
Electronic shutter
Shutter Speed
1/25600 - 30 seconds, Bulb (up to 5 minutes)
Self Timer
2 sec., 10 sec. (Countdown Indicator)
Drive
Drive Modes
Single Capture, Continuous, Self-timer Burst, Exposure Bracketing, Focus Bracketing, Interval Timer
Continuous Drive Speed
Selectable frame rates (3, 5, 8 fps)
Number of Recordable Frames
JPEG: 1000 frames, DNG: 350 frames
Monitor
Type / Coverage
TFT color LCD, Aspect Ratio 3:2, 3.15 type, Approx. 2.1M dots , Electrostatic capacitance system touch panel / Approx. 100%
Color Mode
13 types
Standard, Rich, Calm, Powder Blue, Warm Gold, Teal and Orange, FOV Classic Blue, FOV Classic Yellow, Forest Green, Sunset Red, Cinema, 709 Look, Monochrome
Other Function
Save / Restore Settings, Webcam, In-camera DNG Development, Still image capture from recorded movie files, Fill Light (Supports only in-camera DNG Development)
Built-in Microphone / Speaker
Stereo Microphone / Monaural Speaker
Display Language
English, Simplified Chinese, Traditional Chinese, Danish, Dutch, Finnish, French, German, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish
Interface
USB Type-C
USB 10 Gbps (USB 3.2) Compatible (Mass Storage, UVC, UAC, External Video Output, Charging / Power Delivery)
REMOTE
Cable Release (via USB)
External Microphone Terminal
Supported via USB
Headphone Output Terminal
Supported via USB
Dust and Splash Resistant Structure*
Provided
*Although this construction allows the camera to be used in light rain, it is not the same as being waterproof.
Power
Li-ion Battery Pack BP-81
Number of Recordable Still Images
Approx. 260 images
Minutes of Recordable Continuous Shooting
Approx. 60 min.
Dimensions and Weight
Dimensions (W x H x D)
Approx. 130.1 x 72.8 x 36.8 mm / 5.1 x 2.9 x 1.4 in.
Weight
Approx. 446 g / 15.7 oz. (including battery), Approx. 388 g / 13.7 oz. (Camera Body Only)
Operating Environment
Operating Temperature
32 to 104 °F / 0 to +40 °C
Operating Humidity
85% or less (non-condensing)
Supplied Accessories
Pouch
Li-ion Battery Pack BP-81
Metal Body Cap (Black / Silver)
Start Guide
Limited Warranty
Warranty Sticker
Optional Accessories
Cable Release CR-51
Battery Charger BC-81
Hand Strap HS-11B
Hand Strap HS-11G
