Sigma BF + 24-70mm f/2.8 DG DN II black

A rigorously simple camera,
that evokes the essence of photography.

A full-frame mirrorless camera that offers an unprecedented intuitive shooting experience.
By getting close to the photographer, the Sigma BF captures the beauty that lies hidden in everyday life and becomes the trigger to become aware of that beauty.

The BF focuses on the joy of photography that a camera as a tool can deliver.
By simplifying and eliminating all superfluous elements, this full-frame mirrorless camera redefines the process of photography as a natural act.

The unique user interface, which creates a new sense of connection between the photographer and the camera in a seamless all-metal body, is more intuitive than ever with its haptic buttons and dials. The high-resolution full-frame sensor with approx. 24 megapixels and the reliable dual autofocus system bring visions to life.

Product features:
Simple, clear and completely new user interface
The user interface of the Sigma BF has a completely new information structure compared to conventional digital cameras: The most important shooting-related settings are located on the Live View screen, secondary settings in the optional menu and control functions and detailed settings in the system menu.

Shutter speed, aperture, ISO sensitivity, exposure compensation and color mode as well as other important shooting-related elements can be set simply with a tap of the finger. In combination with the automatic setting, the functions of the general shooting mode dial are also covered.

Clear live view and status monitor
The BF's standard live view screen shows only the minimum information required and can also be set to show no information at all. As the currently active setting is displayed on the status monitor, the photographer can concentrate solely on the composition and the subject on the Live View screen.

Minimalist controls and functional feel
Three buttons, a setting dial, the shutter release and the power button are all the camera's controls. The BF is the first mirrorless camera* in which the control dial, the center button, the option button and the playback button provide haptic feedback without being subject to physical wear and tear. The buttons can be operated precisely and comfortably.
* As of February 2025 according to SIGMA research

Unibody construction
The Sigma BF is the first camera in history* to have a true unibody with unprecedented rigidity. Each camera is machined from a single solid block of aluminum in a process that takes about seven hours. The pleasant weight of the seamless, reliable all-metal body harmonizes perfectly with any attached Lens.
* As of February 2025 according to SIGMA research

Internal memory
The Sigma BF has 230 GB of internal memory, which can store more than 14,000 JPEG files, 4,300 uncompressed RAW images or 2.5 hours of video footage in the highest quality. The USB-C port offers fast data transfer and charging speed.

Different color modes
Thirteen different color modes are available on the BF to open up new avenues of creativity. The modes range from unique options such as Teal and Orange, Powder Blue and Warm Gold to creative and versatile options such as Rich and Calm.

Advanced autofocus
The Sigma BF's hybrid autofocus system, which combines phase and contrast detection, uses state-of-the-art algorithms to capture subjects accurately and reliably. In subject detection mode, not only people but also dogs and cats can be recognized

Video recording (6K, L-Log)
The BF supports high-resolution 6K and L-Log recording, enabling video productions that take advantage of the wide dynamic range of this full-frame camera.

The 24-70mm F2.8 Art has been further developed on all levels:
Optical performance, functionality and portability.
The SIGMA 24-70mm F2.8 DG DN II | Art has been significantly enhanced compared to its predecessor. The most advanced technologies available to SIGMA in design and production have been used.

Compared to its predecessor, the SIGMA 24-70mm F2.8 DG DN II | Art has an improved resolving power over the entire zoom range. It also benefits from functional improvements, such as the newly added aperture ring and the high-speed autofocus with newly developed HLA drive (High-Response Linear Actuator).

In addition, the Lens is approx. 7% smaller and 10% lighter than its predecessor. The new 24-70mm F2.8 II Art is therefore a versatile and powerful tool with which photographers and filmmakers can unleash their creative potential.

Key features:
1.)
Top performance that lives up to the reputation of a top model
The new SIGMA 24-70mm F2.8 DG DN II | Art is the successor to the SIGMA 24-70mm F2.8 DG DN | Art, which is renowned for its high optical performance, and has further improved resolution across the entire zoom range. It delivers the highest image quality even at open aperture and the high speed of F2.8 ensures a soft and harmonious bokeh. The Lens therefore offers maximum performance in almost all shooting situations. The short closest focusing distance further expands the creative possibilities. Flares and ghosting are excellently corrected and focus breathing is largely minimized. This means that the outstanding creative possibilities of this lens can be fully utilized in both photo and video applications.

High optical performance across the entire image and zoom range
The optical design of the lens comprises 6 FLD and 2 SLD glass elements. In addition, 5 aspherical lens elements are used. Aberrations are thus reliably suppressed over the entire zoom range. Sagittal coma flares in particular are well controlled in order to achieve a consistently high resolution right up to the periphery of the image. The effective correction of lateral chromatic aberration means that high-resolution images free of color fringing can be achieved.

Equipped with 5 aspherical lenses
The use of 5 high-precision aspherical lenses enables both high optical performance with minimal aberration correction and a compact optical design. SIGMA's production facility in Aizu, Japan, has the high-precision aspherical molding technology that allows it to produce the thin, highly polarized aspherical lenses required for this purpose. This has led to a higher degree of freedom in optical design.

Excellent close-up capability
The Lens offers an excellent close-up focusing distance of only 17cm in the wide-angle range and a maximum magnification of 1:2.7. These factors create potential for creative close-ups.
Note:
When taking close-ups in the wide-angle range, the lens hood should be removed to avoid touching the subject.

Low susceptibility to flares and ghosting
Flares and ghosting, which impair image quality, have been optimized for all lighting conditions using the latest simulation technology. In addition, a nano-porous and super multi-layer coating has been applied to the front lens to prevent flares and ghosting as far as possible. This enables brilliant, high-contrast images to be taken even in unfavorable lighting conditions.

Minimized focus-breathing
The optical design effectively suppresses focus-breathing. The changes in the image angle when focusing are reduced to a minimum, resulting in natural-looking video recordings.

2.)
Betterportability and extended features
The SIGMA 24-70mm F2.8 DG DN II | Art is approx. 7% smaller and 10% lighter than the previous model. The user-friendliness has been improved with an additional aperture ring and two AFL buttons. Despite its greater compactness and improved features, the Lens offers SIGMA's renowned high build quality. With an uncompromisingly precise and robust construction, as you would expect from a professional photographic tool.

Better handling
While the number of lens elements used has remained the same compared to the previous model, the overall length has been shortened thanks to the modern optical design. In addition, the more efficient mechanical design has resulted in a portable Lens with a maximum diameter of 87.8mm, a length of 120.2mm and a weight of 745g*.
Version with L-mount.

Outstanding processing quality
The robust internal structure and the use of high-precision metal parts ensure high stability and durability in professional use. At the same time, the size and weight of the Lens have been reduced. The design has been consistently geared towards the durability and reliability of the Lens.

Aperture ring with "de-click function"
Many demanding users appreciate the ability to set the aperture directly on the aperture ring of the Lens. The SIGMA 24-70mm F2.8 DG DN II | Art therefore once again offers an aperture ring. Thanks to its "de-click function", this feature is also interesting for filmmakers, as the aperture can be adjusted smoothly and silently in this position. Those who prefer to set the aperture on the camera body can use the aperture ring's lock function and are protected against accidental adjustment.

Equipped with two AFL buttons
Unlike its predecessor, the Lens now offers two AFL buttons, the accessibility of which has been optimized for shooting in portrait and landscape format. These buttons can be assigned individual functions with compatible cameras.

3.)
Professional functions, including high-speed autofocus
The SIGMA 24-70mm F2.8 DG DN II | Art has a high-speed AF with HLA drive in order to offer maximum performance in every shooting situation. Other features, such as dust and splash protection, the water and oil-repellent coating of the front lens and the zoom lock switch complete the professional features of the lens.

With HLA linear actuator
The Lens is equipped with an HLA (High-Response Linear Actuator) linear motor for the
AF drive. Thanks to the powerful HLA, the maximum
drive speed is more than three times that of the previous model*, ensuring
responsive AF shots.
*compared to the maximum drive speed of the SIGMA 24-70mm F2.8 DG DN | Art, the actual AF focusing time may vary

Protected from external influences
In addition to the dust and splash-proof Body*, the front lens
of the Lens has a water and oil-repellent coating. Even
in difficult shooting conditions, you can take pictures without worrying.
* The lens is protected against dust and splash water, but is not waterproof.

Equipped with zoom lock switch
The lens is equipped with a zoom lock switch that locks the lens in the wide-angle range and prevents the tube from extending unintentionally due to its own weight. The lock can be released not only via the switch, but also by turning the zoom ring, which enables flexible handling even for spontaneous shots.

Includes lens hood and case
The specially adapted lens hood LH778-05 is included with the SIGMA 24-70mm F2.8 DG DN II | Art and is securely locked with a quick twist. The Lens is supplied in a matching case for storage and safe transportation.

Further features:
Internal focusing
Compatible with high-speed autofocus
HLA (High-response Linear Actuator)
Compatible with Lens aberration correction
Only in combination with compatible cameras. The available corrections or autocorrection functions may vary depending on the camera model.

Supports DMF and AF+MF
Compatible with AF-Assist (Sony E-mount only)
Nano Porous + Super Multi-Layer Coating
Water and oil repellent coating (front lens)
Aperture ring with aperture ring click switch and aperture ring lock switch

Two AFL buttons
Only in combination with compatible cameras.

Focus mode switch
Supports linear and non-linear translation of the focus ring
Only in combination with compatible cameras of the L-mount system.

Dust and splash water protection

High-precision, robust brass bayonet
Each individual lens is subjected to SIGMA's own MTF measuring system
Interchangeable mount service available
Lens hood LH778-05 included

Compatible with SIGMA USB dock DU-11
Optionally available / only for L-mount

Technical data*:
Lens construction: 19 elements in 15 groups (6 FLD, 2 SLD, 5 aspherical elements)
Angle of view: 84.1° - 34.3°
Number of aperture blades: 11 (round aperture)
Smallest aperture: F22
Closest focusing distance: 17cm (W) - 34cm (T)
Largest magnification: 1:2.7 (W) - 1:4 (T)
Filter size: 82mm
Dimensions (maximum diameter x length): 87.7mm × 120.2mm
Weight: 745g
The above data refer to the L-mount version.

Scope of delivery:
Front cap
Rear cap
Quiver
Lens hood LH878-05