A black camera lens titled brightin star 50mm lens, beside a fern photo with glowing bokeh lights.

Brightin Star’s Innovative 50mm f/2 Lens Offers Trio of Bokeh Customizations

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Written by Seth Sebastian

2026-09-29

The new 50mm f/2 Tri-Sight lens by Brightin Star, showcased at CP+, is now available for E, L, RF, and Z-mount cameras. This manual focus lens introduces an innovative feature with three distinct rendering modes.

While it sports the typical focus and aperture rings of a manual prime lens, the Tri-Sight distinguishes itself with a unique third ring offering “Smooth,” “Prime,” and “Foams” settings. This innovation allows photographers to explore new creative possibilities.

Black digital camera with attached 50mm lens, viewed from above on a white surface.
A black mirrorless digital camera with a 50mm prime lens attached, viewed from a high angle against a white background.

The third control ring adjusts a floating lens group, altering the optical path to modify scene rendering, with a significant impact on bokeh styles.

For those interested in unique lens modifications, the Osmo Action 6 cameras’ dramatic capture might spark your creativity.

Graphic comparing Smooth, Prime, and Foams bokeh styles with cocktail glass illustrations.
A comparison graphic showing three styles of bokeh effects—Smooth, Prime, and Foams—each illustrated with a cocktail glass and varying light blur patterns.

The “Smooth” mode creates softer highlights and more diffuse out-of-focus areas by forcing under-correction of spherical aberrations, maintaining subject sharpness.

Graphic labeled Smooth, displaying a specific style of bokeh effect.
Smooth

The “Prime” mode serves as the standard, delivering expected sharpness and typical bokeh for a 50mm f/2 lens—similar but less blurred than faster lenses.

Image labeled Foams showing a unique bokeh pattern.
Foams

The “Foams” setting provides a distinctive ring-shaped bokeh. Though often avoided by manufacturers, this feature overcorrects spherical aberration, giving a pronounced edge to out-of-focus highlights, appealing to some photography styles.

Foams bokeh with a custom clover-shaped insert altering the blurred light patterns.
Foams with custom clover-shaped bokeh insert

The lens supports rear-mounted creative bokeh inserts, offering photographers additional customization options. These inserts, inspired by DIY projects, are specifically designed for this lens and include shapes like triangles, butterflies, clovers, and stars.

Composite showing four bokeh inserts and their unique effects on blurred light.
A composite image showing four different shaped bokeh inserts and the corresponding effect they create on out-of-focus light points.

Comprising seven optical elements arranged across six groups, the Tri-Sight lens is compact and lightweight, ranging from 429 to 454 grams and measuring 70 to 74 millimeters in length, depending on the mount.

If you’re exploring more about optical design, OM System’s new 14-42mm lens could offer additional insights into lens technology.

Collage showing lens features like optics, aperture inserts, focus lever, and mounted view.
A collage of six panels showcasing camera lens features, including internal optics, creative aperture inserts, a focus lever, an integrated hood, and a lens mounted on a camera rig.

The Brightin Star MF 50mm f/2 Tri-Sight is available now for Sony E-mount, Nikon Z-mount, Canon RF-mount, and L-Mount. Priced temporarily at $349.99, its regular price is $399.99. An option including a custom UV filter is offered at $369.99, normally $434.99.

Lens specification chart detailing dimensions and weights for E, L, RF, and Z mounts.
A product specification chart for a 50mm manual focus lens, showing dimensions and weights for E, L, RF, and Z mounts.

Source: petapixel.com

Frequently asked questions

What are the bokeh customization modes of the Brightin Star lens?

The Brightin Star lens offers three distinct bokeh customization modes: ‘Smooth,’ ‘Prime,’ and ‘Foams.’ The ‘Smooth’ mode creates softer highlights, the ‘Prime’ mode delivers typical sharpness, and the ‘Foams’ mode provides ring-shaped bokeh.

What mounts are compatible with the Tri-Sight lens?

The Tri-Sight lens is compatible with Sony E-mount, Nikon Z-mount, Canon RF-mount, and L-Mount cameras.

How much does the Brightin Star Tri-Sight lens cost?

The Brightin Star Tri-Sight lens is priced temporarily at $349.99, with a regular price of $399.99. An option including a custom UV filter costs $369.99, with a regular price of $434.99.