This Stunning Mirrorless Camera Is an Industrial-Design Tour de Force

The Sigma BF has a 24.6-megapixel sensor and L-Mount lens mount. But more notable, perhaps, is everything it lacks.

Published March 26, 2025

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First announced in February, the Sigma BF is a jaw-dropping full-frame mirrorless camera with a 24.6-megapixel sensor and L-Mount lens compatibility. But more notable, perhaps, is everything it lacks.

sigma bf camera — The body of the Sigma BF is milled from a single piece of aluminum.

As noted in a video preview by Richard Butler, the technical editor at DPReview — the world’s most authoritative source for camera news and reviews — there’s no electronic viewfinder, no in-body image stabilization and no mechanical shutter. There’s not even a slot for an SD card.

Instead, the BF features just four button controls and a dial, along with a 3.2-inch touchscreen display.

And yet, the BF remains one of intriguing camera releases in years, thanks to its clean, Apple-esque body — milled from a single piece of aluminum similar to a MacBook — not to mention its one-of-a-kind interface.

interface of sigma bf camera — The Sigma BF features just four button controls and a dial, along with a 3.2-inch touchscreen display.

“Think of it as a Moleskine notebook,” Butler says in his preview. “It’s not the most practical choice. But a nice notebook is also an attractive, tactile, engaging object.

“The very act of carrying a Moleskine can focus your thoughts and prompt you to ponder what to capture with it. That’s what the BF wants to be.”