Nikon's early fast wide — the manual-focus Nikkor-O Auto 35mm f/2 for the F mount, reportage favourite.
The Nikkor-O Auto 35mm f/2 is a fast wide-standard prime for the Nikon F system, introduced in the mid-1960s. The O code marks its element count, and it was one of the earlier fast 35mm Nikkors, favoured by photojournalists and reportage photographers for its bright aperture and natural wide field. It set the pattern for a long line of Nikon 35mm f/2 lenses.
This is a manual-focus Nikon F lens with a maximum aperture of f/2 and a fixed 35mm focal length, with an automatic diaphragm for full-aperture viewing. It is a retrofocus design that operates with normal reflex viewing on the F system. Only the verified focal, aperture and mount are stated; construction details are omitted to avoid error.
The rendering pairs a moderate wide field with the shallow-focus control of an f/2 aperture, making it a flexible reportage and documentary tool. It suits street, travel, interiors and available-light work where a fast wide is wanted. Wide open it shows the softer edges typical of early fast wides, sharpening as it is stopped down.
On the used market this early Nikkor-O 35mm f/2 is collectible and fairly available, drawing users who want a fast vintage wide. Inspect the elements for haze and fungus, check coatings for cleaning marks, confirm the automatic diaphragm operates, and test focus for smooth action. It adapts well to mirrorless and remains a characterful fast wide-angle.