Nikon AI/S 2/35mm Nikkor

This lens has had the same optics since 1965. The only minor update was in 1973 when multicoating was added, otherwise it's been purely cosmetic and mechanical updates ever since. Numerous changes have been made to the mechanics and coatings over the decades. At first it was single coated in amber, then blue (-C) and for the past three decades it's been multicoated. Any of these lenses in at least the AI version made since about 1977 should be optically indistinguishable from this one. The AI-s version seen here was made from 1981 – 2005. Nikon made about 125,000 of these AI-s versions, and about 450,000 of all types of 35mm f/2 manual focus lenses combined. They are very popular for the same reason I bought my first one in 1983. The 35mm f/2 D AF is a completely different design. It came out in 1989 (pre-D version) and is still made today. With both caps (orig)