High Quality Content by WIKIPEDIA articles! The Nikon E3 and Nikon E3s, co-developed with Fujifilm and marketed also as the Fujix DS-565, are autofocus 1.3 megapixel professional grade quasi-full frame (35mm) digital single lens reflex cameras (DSLR) announced by the Nikon Corporation on 15 June 1998 and released in December 1999. The E3S is identical to the E3 except triple frame rate and larger buffer. They are followers of the Nikon E2N/E2Ns.