Nikon 5.8cm (58mm) f/1.4 NIKKOR-S Non AI Nippon Kogaku Japan PAT. Pend Manual Focus Lens Review

The Nikon 58mm f/1.4 NIKKOR-S Non AI is a vintage manual focus lens from Nikon's early rangefinder and SLR era, recognizable by its "Nippon Kogaku Japan" branding and "PAT. Pend" (patent pending) markings. This early version predates Nikon's AI (Automatic Indexing) system introduced in 1977, making it a manual-only optic that requires stop-down metering on modern bodies or an adapter for mirrorless use. The f/1.4 maximum aperture was fast for its time and remains useful for low light and shallow depth of field shooting.

This particular listing is marked as "bargain" condition with an inoperative aperture, meaning the aperture blades do not function properly. That limits its practical use significantly, as you would be stuck shooting wide open at f/1.4 or relying on workarounds. At $91, it sits in the affordable vintage tier, but the broken aperture mechanism makes it more suitable as a display piece, parts donor, or project lens for someone with repair skills. The 52mm filter thread and classic build quality are hallmarks of Nikon's legacy glass, but functionality is the priority for working shooters.