Nikon N90S

The Nikon F90x or N90s is a 35mm autofocus SLR using Nikon's F lens mount. It was targeted toward the advanced amateur or prosumer; its featureset is comparable to that of Nikon's current D100/200/300 SLRs. The name N90s was used for marketing in the United States; everywhere else, the camera was called the F90x. This camera was also used as the base for the Kodak DCS 400 series of digital SLRs.

The N90s/F90x was introduced in 1994 and discontinued in 2001. The camera's predecessor, the N90/F90, was introduced in 1992 and discontinued in 1994. The successor to the N90s, the F100, was introduced in 1998. (Camerapedia)

the F90x, were built to a high standard and were (and are still) used by many professionals.

However, many F90 and F90x's had problems with the rubberized back, where the rubberized coating would start peeling or turn into a sticky mess. The rubber around the grip and other parts were not affected. This did not affect the functionality of the back but was a nuisance to users. The rubberised coating can however be removed (Once the door has been unclipped and safely removed from the camera body) by rubbing gently with a microfibre towel or similar soaked in plenty of Isopropyl Alcohol. This procedure will remove the rubberised top coating without affecting the surface finish of the underlying plastic or the clear film viewing window. The white printed "Vari Program" icons will remain unaffected also. The end result is a hard semi-gloss finish the same as the camera's top plate.

The Nikon F90x (known in the United States as the N90s) was a slightly upgraded version of the very popular F90.

Differences included faster and more accurate autofocus and shutter speed adjustments in thirds of a stop versus the full-stop increments of the F90. Frame rate was also increased, along with several other minor upgrades. Weather sealing was also beefed up. In addition, it eliminated the beeping function of the F90 (Wikipeda)