The AF-I lenses were the first generation with a rather noisy AF drive. On the other DSLRs these lenses work fine, too, but you must focus manually.ĪF-I and AF-S lenses are AF-D lenses with an integrated AF-motor instead of the screwdriver coupling.
Both types share the "screwdriver" AF coupling. The camera improves its matrix metering a bit with this additional parameter. This lens delivered great results on my F4 and it has a very good reputation in the digital world, too.īetween an AF and an AF-D Nikkor there is only a minor difference: via its CPU interface an AF-D lens provides an information about the focus distance the lens is currently set to. Maybe one day I will do so with my AF-Nikkor 80mm f/2.8. Of course, if you disable the CPU interface of such a lens with a knife or so, it behaves like an ordinary AI-S lens and is then usable on your DSLR. The "screwdriver" coupling of a camera (D70).įorget AF lenses designed for the F3AF! These rare lenses are not compatible with DSLRs. The "screwdriver" coupling of an AF lens (Micro 55mm f/2.8). From the left to the right: AF for F3AF, AF, AF-D, AF-I/AF-S The four different interface types of AF lenses with an aperture ring. A 'G' lens is easily regognisable by the lack of an aperture ring. But every newer lens - introduced around Y2K or later - is of the 'G' type. Still today, there are a lot of such lenses in Nikon's lens lineup. Every AF-Nikkor Nikon produced between 1983 and around Y2K was an AI-S lens with an additional CPU interface and an AF coupling.
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