Nikon Nikkor 50mm f/1.8 Ai - Nikon F Mount

The Nikkor 50mm f/1.8 Ai replaced the f/2 version, offering a faster maximum aperture in a similarly robust metal housing. This 'long-nose' version features a deeply recessed front element which acts as a natural lens hood, providing excellent flare resistance. It is well-regarded for its balance of size, brightness, and optical correction, making it a staple for Nikon film enthusiasts. Check for smooth rotation of the focus ring, as the original grease can sometimes stiffen over time. SDS examines the six aperture blades for snappy operation and ensures there is no oil migration from the helicoid. The filter thread is 52mm; ensure it is not dented, as this is a common point of impact damage on these vintage primes.