Overview

The Nikkor-N 5cm f/1.1 is a rare, ultra-fast rangefinder lens from 1956, known for its large size and impressive build. Optically, it uses a Gauss-type design with lanthanum glass for good sharpness and flatness, but it suffers from common issues like lens separation and fragile aperture blades. Handling is tricky: the internal mount version can strain the camera's focusing mechanism, while the external mount offers helical focusing. It suits collectors and enthusiasts of vintage fast lenses, but requires careful use and expert repair if damaged.