INTRODUCING SIGMA BF
Meet our most simplified camera to date—the SIGMA BF. Zero excess, pure photographic experience. Made in Aizu, Japan and rooted in the essence of photography, the BF is a minimal system camera for high-quality daylight photography.
It features an intuitive interface, a seamless one-piece aluminum body, and only the most essential best-in-class tools. Meticulously crafted in pursuit of ultimate minimalism, the BF keeps your photographic eye ready and free from distractions. This is photography distilled to its essentials and redefined for pure creative flow.


BACK TO SIMPLICITY
The early cameras were pinhole boxes that gathered light. Over time, lenses evolved into essential tools for photographic expression. The simplicity of these early cameras provided a pure connection to the photographer’s vision.
Since then, camera bodies have grown increasingly complex, with added features, buttons, and intricate menus. The BF takes a different approach, simplifying the modern camera through the lens of the early camera obscura. Designed minimal and developed for effortless use, it places your creativity at the center.


ULTIMATE IN MINIMALISM




THE ESSENTIALS IN A USER INTERFACE
See. Shoot. Paint with light and shadow. BF redefines photography by moving beyond conventional user interface logic. Instead of numerous dials and buttons, its interface relies on just a few simple maneuvers, readily available for that shot that perfectly captures your vision.
Hands-on and intuitive, it dramatically reduces the steps between what you see and what you capture, keeping your focus on the moment and your creativity.
THE SIGMA 1-2-PUNCH:
ADJUST AND PRESS
Access exposure settings directly and adjust them to your preference with just 1 dial and 2 buttons. The dial handles almost all operations, while the buttons operate screen display, settings and playback.
A CLEAN LIVE VIEW
Stay creatively focused with a clean live view free of distracting display information. Get your bearings quickly with a simple at-a-glance sub-display only highlighting dial changes.
WHAT YOU SEE IS WHAT YOU FEEL
Haptic control for a tactile, enhanced sense of connection with your what you see and shoot. Buttons convert pressure of your fingers into an electrical signal, giving your fingers a physical sensation.
CONNECITIVTY
Stay creatively focused with a clean live view free of distracting display information. Get your bearings quickly with a simple at-a-glance sub-display only highlighting dial changes.
TACTILE DURABILITY
The BF’s camera body is machined into a single aluminum piece using high-precision 5-axis machining equipment at our factory in Aizu, Japan. The milling process takes seven hours, resulting in a screw-free, seamless chassis that provides exceptional durability, a knurled texture with a tactile feel, and a weight perfectly balanced for lenses. The BF body is especially suited to our I series lenses.


A 9 HOUR HIGHLY PRECIS MILLING PROCESS


POWERFUL WHERE IT MATTERS
Exceptionally simple to use and equipped with carefully selected, essential tools, the BF is designed to unleash your creativity. With a wide range of lens options, 35mm full-frame capability, 14 predefined color modes, and 6K video for high-definition clarity, it combines superb image quality with unobstructed creative flow.
Powerful where it matters, the BF combines the elegant simplicity in early photography with modern digital technology, allowing you to truly see and capture the world in its finest details and textures.


SIGMA BF IS LAUNCHING WITH 9 LENSES IN MATCHING COLORS


COLOR MODES
VIVID
NEUTRAL
PORTRAIT
LANDSCAPE
CINEMA
WARM GOLD
TEAL AND ORANGE
SUNSET RED
FOREST GREEN
POWDER BLUE
FOV CLASSIC BLUE
FOV CLASSIC YELLOW
MONOCHROME
DUOTONE
6K VIDEO
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sodales lorem vel magna condimentum, sit amet vulputate lacus tincidunt. Nulla id nulla eu lorem dapibus feugiat nec eu libero.
FULL FRAME SENSOR
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sodales lorem vel magna condimentum, sit amet vulputate lacus tincidunt. Nulla id nulla eu lorem dapibus feugiat nec eu libero.
YOUR EYE MAKES THE DIFFERENCE
The BF is designed for the magic of everyday moments—the texture of a stone, the curve of a leaf, the traces of a life lived in a face. The unique perspective your photography brings invites others to appreciate the beauty in the unseen. Because ultimately, photography is a connection beyond words. To celebrate its remarkable ability to reveal the world in ever new ways, we asked photographers we admire to share what they see. Shot with the Sigma BF, their images capture people, nature, and objects in everyday moments, painted with light and shadow in deeply personal ways.


SARAH VAN RIJ & DAVID VAN DER LEEUW
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sodales lorem vel magna condimentum, sit amet vulputate lacus tincidunt. Nulla id nulla eu lorem dapibus feugiat nec eu libero.


OLA RINDAL
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sodales lorem vel magna condimentum, sit amet vulputate lacus tincidunt. Nulla id nulla eu lorem dapibus feugiat nec eu libero.


FUMI NAGASAKA
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sodales lorem vel magna condimentum, sit amet vulputate lacus tincidunt. Nulla id nulla eu lorem dapibus feugiat nec eu libero.
Ligne | Art | |
---|---|---|
Formule optique | 18 elements in 13 groups (2 FLD, 1 SLD, 5 aspherical elements) | |
Lens Type | Standard | |
Sensor Size | Full Frame | |
Angle de vue | 75.4-23.3° | |
Diaphragme | 12 (rounded) | |
Ouverture minimale | F22 | |
Distance minimale de mise au point | 40cm | |
Rapport de reproduction maximal | 1:3.1 at f=105mm | |
Poids (gramme) | 995 gram | |
Diamètre de filtre | φ82mm | |
Edition number | 024 | |
EAN | L-Mount: 0085126 636692 |
LENS CONSTRUCTION


GEOMETRICAL MTF Chart


GEOMETRICAL MTF Chart


DIFFRACTION MTF CHART


DIFFRACTION MTF CHART


Inner focus system
To increase stability, this lens configuration uses movable internal lens elements that adjust focus without changing the length of the lens barrel.
HLA (High-response Linear Actuator)
HLA is SIGMA's proprietary linear motor. It drives the focus lens directly without going through gears or other mechanical parts, resulting in quiet, high-precision autofocusing.
Compatible with Lens Aberration Correction
Matching the optical characteristics of the lens, this function performs in-camera corrections of peripheral illumination, chromatic aberrations, distortion, and more, to further enhance image quality.
*Function available on supported cameras only. Available corrections or auto correction functionality may vary depending on the camera model.
*On cameras where lens aberration correction is controlled with 'ON' or 'OFF' in the camera menu, please set all aberration correction functions to 'ON'(AUTO).
Nano Porous Coating
The super multi-layer coating is combined with SIGMA's unique coating technology "NPC (Nano Porous Coating)". The lens has been designed to be less susceptible to strong incident light such as backlight.
"NPC (Nano Porous Coating)" incorporates porous silica as the coating material. The porous silica layer has nano-sized holes with air inside. Having holes of this size enables a large reduction in the refractive index, allowing the reflectance to be lowered more than conventional anti-reflective coatings. As a result, reflected light causing flares and ghosting is sharply reduced, achieving clear image quality.
Super Multi-Layer Coating
SIGMA's own Super Multi-Layer Coating suppresses flare and ghosting by preventing reflections with in the lens. All lenses in the current SIGMA range feature this original technology. In digital cameras, flare and ghosting may also be caused by reflections between the image sensor and lens surfaces. Here too, SIGMA's Super Multi-Layer Coating is highly ef fective, assuring images of outstanding contrast.
Water and oil repellent coating
Incorporates a water and oil-repellent coating that allows water to be wiped away easily and prevents oil and fat from sticking to the surface, even in challenging shooting conditions. At the same time, the maintenance of the lens surface becomes easier.
Aperture ring
Aperture ring, designed to help users work intuitively
Aperture ring click switch
Mounted with a de-click function for removing clicks by the aperture ring click switch, enabling seamless operations that are especially useful such as during video shooting.
Aperture ring lock switch
A ring lock system to prevent from unintended movement of the aperture ring during shooting.
AFL button
The AFL button can be assigned with various functions widens the range of operations available on the lens.
Focus Mode Switch
Using this swich, it is possible to switch the focus mode between AF and MF.
Linear focus / Non-linear focus
A focus movement method of interchangeable lenses for mirrorless cameras (DN lens) in relation to the rotational angle of the focus ring during manual focusing.
With "non-linear focus," the amount of focal point movement varies depending on the focus ring rotational speed.
With linear focus, if the focus ring rotational angle is the same, the amount of focal point movement remains the same regardless of the focus ring rotational speed.
Zoom lock switch (Wide end)
The zoom lock switch fixes the zoom ring at the widest end, preventing it from rotating and causing the lens barrel to extendunder its own weight during transportation.
Dust and Splash Resistant Structure
This lens features a highly effective dust and splash resistant structure with special sealing at the mount connection, manual focus ring, zoom ring, and cover connection.
*Although this construction allows the lens to be used in light rain, it is not the same as being waterproof, so please prevent large amounts of water from splashing on the lens. It is often impractical to repair the internal mechanism, lens elements and electric components if they are damaged by water.
Compatible with high-speed autofocus
Supports DMF and AF+MF
Compatible with AF assist (for Sony E-mount only)
Lens Hood LH878-07
Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only)
Designed to minimize flare and ghosting
Mount Conversion Service available
COMPATIBLE ACCESSORIES