Brightin Star AF 12mm f/2.8 Brings Autofocus to Ultra-Wide Full-Frame Primes

Brightin Star has introduced a new ultra-wide prime for full-frame mirrorless cameras, the AF 12mm f/2.8.

It’s a notable release for the company, mainly because it brings autofocus to a focal length that’s typically dominated by manual-focus designs. The lens builds on Brightin Star’s earlier 12mm f/2.8, but adds AF while keeping a similar overall look.

Ultra-Wide Without the Fisheye Look

The 12mm focal length delivers a very wide 122.5-degree field of view, making it a strong option for landscapes, architecture, travel, and even astrophotography.

Unlike fisheye lenses, this one uses a rectilinear design, which aims to keep straight lines looking straight—something that’s especially useful for architectural work. Brightin Star says the optical design also helps reduce the distortion that ultra-wide lenses often struggle with.

The lens uses a fairly complex optical formula with 15 elements in 11 groups, including aspherical, extra-low dispersion, and high-refractive index elements.

These are meant to control chromatic aberration, improve sharpness across the frame, and maintain better contrast. There’s also a multi-layer coating to help reduce flare and ghosting.

Autofocus and Handling

Autofocus is driven by a stepping motor, which should offer relatively fast and quiet performance—useful for both stills and video.

The lens can focus as close as 0.3 meters, opening up some creative options for exaggerated perspectives with foreground subjects.

On the barrel, there’s a good range of physical controls, including an AF/MF switch, a customizable function button, an aperture ring, and a manual focus ring—making it easy to adjust settings without diving into camera menus.

Build and Design

Despite the wide field of view and complex optics, the lens remains fairly manageable in size. It measures 97mm in length and weighs 499 grams.

It also includes an integrated petal hood, which helps protect the bulbous front element and control flare. A weather-sealed mount gasket adds some protection when shooting outdoors.

Pricing and Availability

Brightin Star has not yet announced pricing for the AF 12mm f/2.8. The lens will be available for Sony E and Nikon Z mount cameras.

With autofocus, a rectilinear design, and a relatively compact build, this looks like Brightin Star’s attempt to make ultra-wide shooting a bit more accessible—especially for photographers who prefer AF over manual focus.

Sample Images with the Brightin Star AF 12mm F/2.8