The Nikon F90X, known as the N90s in the United States, is a 35mm autofocus SLR camera introduced in 1994 and discontinued in 2001. It uses Nikon's F lens mount and was designed for advanced amateur photographers. Key features include a bright viewfinder with 92% coverage, a top LCD display for settings, and an ASA range of 6-6400 with DX-enabled film reading. It offers shutter speeds up to 1/8000 second, various exposure modes including program, aperture-priority, and shutter-priority, and 3D Matrix metering. The F90X is compatible with nearly all Nikkor F-mount lenses and SB series speedlights, and it was also used as the base for the Kodak DCS 400 series of digital SLRs.