Brightin Star MF 50mm f/1.05
Brightin Star · 50 mm · f/1.05
Score Breakdown
Scores combine our editorial testing with published lab data.
53
SCORE /100
What We Like
+Ultra-fast f/1.05 aperture enables exceptional low-light performance and cinematic shallow depth of field
+Compact, affordable pricing ($299.99 MSRP) for an f/1.05 full-frame prime lens
+Maintains sharpness even at maximum aperture with 10-element optical design and high-refractive elements
+15-blade aperture diaphragm produces smooth, rounded bokeh and circular highlights
+Multi-layer coating achieves 99.8% light transmission, reducing flare and ghosting
+Available in multiple mirrorless mounts (Sony E, Canon RF, Nikon Z, L-mount)
Worth Knowing
−No weather sealing; not suitable for wet or dusty conditions
−Manual focus only with limited focus distance markers (0.57m minimum), requiring deliberate focusing technique
−No autofocus or electronic contacts reduces convenience for fast-paced shooting
−Exhibits lateral chromatic aberration at f/1.05 and some spherical aberration that shifts focus when stopping down
General | |
|---|---|
About This LensThe Brightin Star MF 50mm f/1.05 is a full-frame manual-focus prime lens for mirrorless cameras offering an ultra-fast maximum aperture and classic focal length for expressive depth of field and strong low-light performance. The 10-element 8-group optical design includes two high-refractive-index and two low-dispersion elements to maintain sharpness at maximum aperture. Its multi-layer coating achieves up to 99.8% light transmission to reduce flare and ghosting, while a 15-bladed aperture provides smooth bokeh. Priced at $269 USD, it's available for Sony E, Canon RF, Nikon Z, and L-mount cameras. | |
| Brand | Brightin Star |
| Release Year | 2026 |
Production Status ⓘCurrent status of lens manufacturing (e.g., in production, discontinued). |  In Production |
Lens Mount ⓘThe lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras. | Sony E |
System ⓘIndicates which camera system the lens is designed to attach to. | Sony E |
Maximum Format ⓘLargest sensor size compatible with the lens. |  Full Frame |
Physical64/100 | |
| Lens Weight | 606 g |
Lens Diameter ⓘWidth of the lens at its widest point | 68 mm |
Lens Length ⓘHow long the lens is from front to back. | 80 mm |
Front Filter Compatible ⓘSome lenses are compatible with front filters, some are compatible with back filters and some are compatible with both. Front filters are usually more convenient to add and remove. |  Yes |
Front Filter Size ⓘDiameter of attachable filters. | 58 mm |
Optics77/100 | |
Focal Range ⓘShortest to longest focal length of the lens (zoom range start - end ) | 50 mm |
Aperture Range ⓘLargest aperture at the lens's shortest focal length to longest focal length (aperture range start - end) | 1.05 |
| Focal Length Angle of View | 43° |
Flange Focal Distance ⓘDistance from lens mount to sensor. | 18 mm |
Diaphragm Type ⓘStructure and design of the aperture |  Manual |
Blades ⓘNumber of diaphragm blades in aperture | 15020 |
Zoom Lens ⓘZoom allows you to vary the focal length, change between long shots and close-ups | No |
Closest Focusing Distance ⓘMinimum distance for a subject to be in focus. | 57 cm01500 |
| Autofocus Mode | No |
| Manual Mode |  Yes |
| Manual Focusing Ring |  Yes |
Features | |
Weather Sealing ⓘWeather sealing capabilities will give you more confidence when shooting in unfavourable conditions. | No |
Fluorine Coating ⓘCoating to repel water and oil from lens elements. | No |
| Built In Lens Hood | No |
Teleconverter ⓘA teleconverter (extender) is an extra piece of equipment that fits between the lens and the camera body to enhance magnification | No |
| Image Stabilization | No |
Construction15/100 | |
Elements ⓘLens elements refer to individual pieces of glass within the lens. | 10 |
| Groups | 8 |
Bi Aspherical Elements ⓘElements with two non-spherical surfaces | 0 |
Low Dispersion ⓘElements that reduce chromatic aberration | 2 |
Super Low Dispersion ⓘAdvanced elements further reducing chromatic aberration | 0 |
CA Reduction ⓘBuilt-in features to reduce chromatic aberration | 0 |
Internal Focusing ⓘInternal Focusing means that the lens does not change in size during focusing, and the front element does not rotate. | No |