Sigma BF full-frame camera launches with a minimalistic design
Sigma has unveiled the Sigma BF – a 24.6 MP full-frame mirrorless camera that helps photographers focus on making art rather than operating complex systems through a minimalistic design.
The path to minimalism begins with a body carved from a single block of aluminum, the first for a full-frame camera. (The Leica T was an earlier APS camera with a unibody.) The BF controls are simplified to a single control dial and three pressure-sensitive haptic buttons on the rear, along with a shutter release on top. The 2.1 M dots display shows only the live image by default while a smaller, monochrome status monitor above the rear dial indicates the user selected value for settings such as the shutter speed.
Despite the simplicity, the Sigma BF is equipped with modern features. The 35 mm sensor is coupled with a hybrid autofocus system that uses both contrast and passive autofocus with human and animal subject tracking in light levels as low as -5 EV, with an ISO range of 6 to 102,400. Full manual settings are available along with 13 types of color modes. Images are saved as 6,016 x 4,012 pixel 14-bit RAW or JPEG files at up to 8 frames per second.
Videographers can use the camera to capture electronically-stabilized 6K and 4K videos at up to 29.97 fps, and 2K videos at up to 119.88 fps. Videos with stereo audio can be saved as H.264, HEVC H.265, or L-Log files to 230 GB of internal storage. The camera has a base ISO of 1,250 in video mode. Selectable histogram, zebra pattern, and false color monitors can be displayed to assist with setting the video exposure.
The camera measures 130.1 x 72.8 x 36.8 mm (5.1 x 2.9 x 1.4 in.) and weighs 446 g (15.7 oz.) including the battery. The camera is compatible with L-Mount lenses, including nine refreshed Sigma I series prime lenses from 17 mm to 90 mm that have been re-released with new color variations and product names, but unchanged optical performance.
The Sigma BF will go on sale in April 2025 in black or silver with an expected MSRP of $1999. Readers who prefer a camera with more buttons for instant access to settings can consider the Sigma fp full-frame compact (sold here on Amazon).
Launch schedule of Sigma BF
2025.02.24
Sigma Corporation is pleased to announce the launch schedule of the Sigma BF.
Sigma BF
Launch: April 2025
Supplied accessories: Li-ion Battery Pack BP-81, Metal Body Cap
Body colors: Silver, Black
* Product appearance and specifications are subject to change.
* L-Mount is a registered trademark of Leica Camera AG.
#SigmaBF #Sigma
A radically simple camera that evokes the essence of photography
A full-frame mirrorless camera offering an unprecedented intuitive shooting experience
Staying close to the photographer, the Sigma BF captures the beauty that lies hidden in everyday life, and becomes the catalyst to be aware of that beauty.
The BF focuses on the joy of photography that a camera as a tool can provide. By simplifying and stripping away all excess elements, this full-frame mirrorless camera redefines the process of taking a photograph as a natural act.
The unique user interface, which provides a new sense of connection between the photographer and the camera in a true seamless unibody, is more intuitive than ever with its pressure-sensitive haptic buttons and dial. The high definition expression of the approximately 24-megapixel full-frame sensor and the reliable dual autofocus system bring your vision to life.
[Key features]
Simple, clear, and completely new user interface
The user interface has a completely new information structure compared to conventional digital cameras, with the main shooting-related settings stored on the live view screen, secondary settings in the optional menu, and management functions and detailed settings in the system menu. Users can easily operate the shutter speed, aperture, ISO sensitivity, EV compensation and color mode, along with other important shooting-related elements at the touch of a finger. Combined with the auto setting, the functions of the general shooting mode dial are also covered.
Clear live view and status monitor
The default live view screen displays only the minimum necessary information and can be changed to display no information at all. Since the currently active setting is displayed on the status monitor, the users can concentrate solely on composition and the subject on the live view screen.
Minimal controls and haptics
All controls are integrated into just three buttons, one dial, the shutter release, and the power button. The BF is the first mirrorless camera* to incorporate haptics into its Dial, Center button, Option button, and Playback button, resulting in minimal physical wear. The buttons are always accurate and comfortable to press.
* As of February 2025, by Sigma.
Unibody structure
The BF is the first camera in history* to feature a true unibody, which boasts unprecedented rigidity. Each camera is carved from a single, solid block of aluminum ingot over the course of seven hours. The reliable, comfortable weight of its seamless all-metal body harmonizes perfectly with any attached lens.
* As of February 2025, by Sigma.
Internal storage
The BF features 230 GB of internal memory, capable of storing more than 14,000 JPEG files, 4,300 uncompressed RAW images or 2.5 hours of video at the highest-quality setting, with the USB-C port offering fast charging and data-transfer speeds.
Various color modes
Thirteen different color modes are available to open up new avenues of creativity. The modes range from unique options like Teal and Orange, Powder Blue, and Warm Gold to creative yet versatile options such as Rich and Calm.
Evolved autofocus
A hybrid autofocus system combining image phase detection and contrast detection utilizes state-of-the-art algorithms to capture subjects accurately and reliably. In addition to people, dogs and cats can be detected in the subject detection mode.
Video shooting (6K, L-Log)
The BF supports high-resolution 6K and L-Log recording, enabling video production that takes advantage of the wide dynamic range of a full-frame sensor.
Equipped with L-Mount
The L-Mount lens mount allows the camera to be used with a wide variety of interchangeable lenses for mirrorless cameras from Sigma as well as other L-Mount Alliance partners.
[Information]
Sigma BF Product Information
www.sigma-global.com/en/cameras/bf/
[Contact]
For further information, please contact your local authorized Sigma Service Station listed at the link below:
www.sigma-global.com/en/world-network/
