Nikon 50mm f/1.4 AI

Nikon 50mm f/1.4 AI is a manual-focus standard prime lens for Nikon F-mount cameras, designed for use on compatible film SLRs and Nikon digital bodies that support AI lenses, with possible operational limitations depending on the camera model. The 50 mm focal length provides a natural perspective on full-frame and 35 mm film format, making it suitable for everyday photography, environmental portraiture, reportage, street photography, travel, and available-light shooting. The f/1.4 maximum aperture allows shooting in low-light conditions and achieving shallow depth of field, while the aperture ring enables manual aperture control. The optical design consists of 7 elements in 6 groups, with a minimum focusing distance of 0.45 m and a 52 mm filter thread, specifications consistent with Nikon’s traditional manual standard lenses. Focusing is fully manual through a mechanical focusing ring, with no autofocus or optical stabilization. The AI, Automatic Indexing, system enables mechanical aperture communication with compatible Nikon bodies, although metering and available functions vary depending on the camera used. Nikon 50mm f/1.4 AI is suitable for photographers looking for a bright, compact, and fully manual 50 mm lens, usable on both film and compatible Nikon F digital systems, while noting that, as a vintage lens, glass condition, focusing ring smoothness, aperture accuracy, and signs of wear should be checked carefully.