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A Seamless Connection Between Photographer and Camera

The Sigma BF is more than just a camera—it’s an extension of the photographer's vision. 

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. 

Full-Frame | f/2.8 to f/22

Compact Mid-Telephoto Prime

Fast Internal Focus System

I Series Lens

All-Metal Lens Barrel

Dust & Splash-Resistant Design

Knurled Focus and Aperture Rings

Rounded 9-Blade Diaphragm

Full-Frame | f/4 to f/22

Compact Ultra-Wide Angle Prime

Fast Internal Focus System

I Series Lens

All-Metal Lens Barrel

Dust & Splash-Resistant Design

Knurled Focus and Aperture Rings

Rounded 7-Blade Diaphragm

Full-Frame | f/2 to f/22

Short Portrait-Length Prime

Fast Internal Focus System

I Series Lens

All-Metal Lens Barrel

Dust & Splash-Resistant Design

Knurled Focus and Aperture Rings

Rounded 9-Blade Diaphragm

Full-Frame | f/2 to f/22

Sharp, Compact Prime

Fast Internal Focus System

I Series Lens

All-Metal Lens Barrel

Dust & Splash-Resistant Design

Knurled Focus and Aperture Rings

Rounded 9-Blade Diaphragm

Full-Frame | f/2 to f/22

Compact, Fast Wide-Angle Prime

Fast Internal Focus System

I Series Lens

All-Metal Lens Barrel

Dust & Splash-Resistant Design

Knurled Focus and Aperture Rings

Rounded 9-Blade Diaphragm

E-Mount Lens/Full-Frame Format

Aperture Range: f/1.4 to f/16

Two FLD Elements and One SLD Element

Four Aspherical Elements

Super Multilayer Coating

STM Autofocus Motor

Rounded 11-Blade Diaphragm

Brass Bayonet Mount

72mm Front Filter Threads

Rear Filter Holder

Works with a wide variety of iPhones that have MagSafe

Attaches a standard 67mm photographic filter over the phone's lenses

Has a cold shoe and a threaded tripod port (both are detachable)

The Quick-Mount S-Bracket 2 is the fastest and easiest way to attach your speedlights, compact flashes, or LEDs to Bowens S-Type modifiers and umbrellas. No assembly or extra plates required—simply insert your light, tighten the strap, and attach your modifier.