The Nikon F90's autofocus system was driven by a small 'peanut' motor in the camera body that drove the lens via a mechanical link, unlike Canon's autofocus system, which used motors built into each lens. The Nikon F4, the professional model available at the time of the F90's release, had very slow autofocus compared to Canon's autofocus SLRs. It was thus seen by many as a 'stop-gap' measure to prevent the mass migration of many Nikon-using professional photographers to Canon, as Nikon's next fully professional camera, the F5, was some time away from release. At the time of its release it was noted for its fast autofocus speed compared to previous Nikon models, which had lagged behind competitor Canon's. The Nikon F90 (known as the N90 in the United States) is a 35mm SLR camera manufactured between 19 and replaced the earlier Nikon F-801 (N8008 in the U.S.).
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