Nikon Nikkor-S (C) Auto 1:1.4 f= 50mm standard lens As stated this lens appeared in March 1962. This lens has 7 elements in 6 groups, which optical formula changed several times during its production. In fact this lens, as the modern AFD-Nikkor, is still in production. Changes in optical formula and its exterior were in 1972, 1974, 1976, 1981, 1984 and as an AF-version in 1986 (see matrix). This very favorite lens - even in the digital era - still is one of the best standard prime lenses ever produced. More than 4 million lenses were build since its introduction.