As with the original D2X, the Nikon D2xs is a professional digital SLR that features a 12.4 megapixel CMOS sensor, and offers five frames per second shooting plus the ability to shoot even faster - up to eight frames per second - by switching to a lower resolution 6.8 megapixel mode. This high-speed burst mode operates by reading only from the center of the imager, which means that to get the higher speed, the focal length crop changes from the regular 1.5x of a DX sensor, to 2.0x. Probably the most significant changes in the D2Xs' functionality relative to its predecessor are in this area. Where the D2X relied on red markings in the viewfinder to indicate the smaller cropped area, the D2Xs indicates the area by shading everything that is cropped out of the image, leaving the uncropped portion of the image somewhat brighter.



Link: Imaging Resource