Nikon's definitive portrait tele — the manual-focus Nikkor-P Auto 105mm f/2.5 for the F mount.
The Nikkor-P Auto 105mm f/2.5 is Nikon's classic portrait telephoto for the F system, introduced in 1959 as one of the original F lenses. The P code marks its element count, and the 105mm f/2.5 formula descended from Nikon's rangefinder line. It became one of the most respected portrait lenses of its generation and was used for many famous photographs.
This is a manual-focus Nikon F lens with a maximum aperture of f/2.5 and a fixed 105mm focal length, using an automatic diaphragm for full-aperture viewing. It is a medium telephoto operating with normal reflex viewing on the F system. Only the verified focal, aperture and mount are stated; further construction details are omitted to avoid error.
The lens is known for sharp, high-contrast rendering with smooth background transitions, a combination that made it a definitive portrait lens. The 105mm focal length gives a comfortable working distance and flattering compression for head-and-shoulders portraits. It performs strongly even wide open and handles general telephoto duties well.
On the used market the Nikkor-P 105mm f/2.5 is common and affordable, one of the most recommended vintage portrait lenses. Inspect the elements for haze and fungus, check coatings for cleaning marks, confirm the automatic diaphragm operates, and test focus damping. It adapts readily to mirrorless where it remains a highly regarded portrait telephoto.