Beauty is Radically Simple

An intuitive tool designed to radically simplify imagemaking, the 24.6MP full-frame Sigma BF Mirrorless Camera, reimagines the high-end digital camera interface to emphasize ease of use. The L-mount, hybrid-AF body also boasts 6K video capabilities, resulting in a camera that produces high-quality imagery at will.

Sleek, Intuitive Design

The Sigma BF marks a turning point in mirrorless camera design. Every point of user interface from body to screen has been reconceived to streamline the image creation process, allowing users unprecedented access to the beauty unfolding in front of the lens.

Streamlined UI

The primary user interface of the live-view rear touchscreen has been redesigned for distraction-free shooting, where exposure settings like shutter speed, aperture, ISO sensitivity, EV compensation, and color mode all find their natural home. The live-view itself has been streamlined to allow shooters maximum focus on their subject, while a small status monitor above the rear dial pad clearly displays the active settings. All other options and settings are accessible via three simple menu screens.

Physical Design

The Sigma BF's forward-looking physical design concentrates all controls into just three buttons: a dial, a shutter release, and a power button. A rear dial pad allows further navigational control. All of these physical controls are pressure-sensitive haptics-driven, giving the user intuitive response to their touch. The camera also features a first-of-its-kind "unibody" build, as each camera is carved from a single block of aluminum, yielding a balanced, uniform weight distribution. A thumb grip in the upper right corner adds a small but crucial ergonomic element for handling the camera.

Performance

A 24.6MP full-frame, backside-illuminated CMOS sensor powers the camera's high-end imagery. The camera has a wide dynamic range, a native ISO sensitivity of 100-102400 expandable on the low end to ISO 6, and the large sensor which benefits both low-light performance and low depth-of-field effects. Continuous shooting is possible at up to 8 fps, and the camera produces 14-bit DNG lossless RAW files in addition to JPEGs. A hybrid phase detection and contrast detection autofocus ensures quick and accurate focusing. Additionally, remote shutter release is possible with the optional CR-51 cable release.

Internal Storage

One of the notable features of the Sigma BF is its 230GB of internal storage, translating to more than 14,000 JPEG files, 4,300 uncompressed RAW files, or 2.5 hours of video. Additionally, a USB-C port offers data-transfer speeds of 10 Gb/s for external storage.

Video Capabilities

The Sigma BF can record video in up to 6K 30 fps and reaches up to 120 fps when shot in Full HD. The camera also supports L-Log color grading and HVEC encoding. Electronic image stabilization is supported when shooting video, benefitting smooth footage capture, and on a full battery the camera can record continuously for an hour. A built-in microphone atop the camera captures stereo sound, with support for an external microphone or headphone output. The USB-C terminal also allows users to output video and use the Sigma BF as a webcam.

L-Mount Compatibility

Sigma is a member of the L-Mount Alliance, and the BF's L-mount for lenses affords users access to the broad range of high-quality lenses from Sigma, Panasonic, and Leica.

Color Modes

The Sigma BF comes pre-loaded with 13 different Color modes, allowing users to apply color filters to their imagery for expanded creativity: Standard, Rich, Calm, Powder Blue, Warm Gold, Teal and Orange, FOV Classic Blue, FOV Classic Yellow, Forest Green, Sunset Red, Cinema, 709 Look, and Monochrome.

• Type

  Interchangeable-lens Mirrorless Type Digital Camera

• Memory Media

  Internal Memory (Approx. 230 GB) , USB Storage (for Backup)

• Lens Mount

  L-Mount

• Image sensor

  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

• 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]

• Still Image File Size (RAW)

  6016 x 4012

• Still Image File Size (JPEG)

  6016 x 4012

• Crop

  3840 x 2560 (Equivalent to Approx.1.5 times the focal length)

• Movie Format

  MOV: H.264, H.265, L-Log

• Audio Format

  Linear PCM (4ch 48 kHz / 16-bit: Max)

• Movie Recording Size / 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

• 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, Subject Tracking AF (Human + Animal, Human, Animal)

• AF Lock

  Half-press the shutter button

• Other Focus Functions

  AF+MF, Full-time AF+MF, MF Magnification (Full Screen, PIP (2x / 4x / 8x) ) , MF Auto Review, Focus Peaking, Focus Ring Control (Non-linear, Linear)

• Metering Mode

  Evaluative, Spot Metering

• Metering Range

  -7~20 EV (50mm F1.4: ISO 100)

• Exposure Mode (Still)

  (P) Program AE, (S) Shutter Speed Priority AE, (A) Aperture Priority AE, (M) Manual

• Exposure Mode (Movie)

  (P) Program AE, (S) Shutter Speed Priority AE, (A) Aperture Priority AE, (M) 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 Modes

  Single Capture, Continuous, 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 / 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 / Load 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 Launguage

  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: Supports Cable Release
  External Microphone and Headphone Output: Supported

• Dust and Splash Resistant Structure*

  Provided
  *Although this construction allows the lens 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 (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 Temperature

  32 to 104 °F / 0 to + 40 °C

• Operating Humidity

  85 % or less (non-condensing)

• Supplied Accessories

  Li-ion Battery Pack BP-81
  Metal Body Cap (Black / Silver)
  Start Guide
  Limited Warranty
  Warranty Sticker