Budget M42-mount wide-angle from the Dixon's house brand, extremely affordable for adapted vintage glass shooters.
The Prinzflex 28mm f/2.8 is a budget third-party wide-angle prime in M42 screw mount, likely produced in Japan and rebadged under the Prinzflex brand in the 1970s-1980s. M42 mount.
f/2.8 maximum aperture. 28mm focal length (full-frame). Manual focus. Budget third-party optic. M42 (42mm × 1mm screw thread) mount.
Prinzflex was a rebadge label used for budget third-party lenses sold primarily in the UK market. M42 screw mount enables adaptation to most modern mirrorless camera systems via standard M42 thread adapters. A low-cost vintage wide option.
On the used market the Prinzflex 28mm f/2.8 is a budget vintage wide prime. Condition checks: front element for marks, aperture blade condition, M42 thread condition. M42 mount — adapts to most modern mirrorless cameras.