Nikon as expected this morning launched the D3s. Its update to the mainstay pro DSLR adds 720p, 24FPS video like the D300s before it but is most notable for its dramatically improved light sensitivity. The 12-megapixel camera is one of the first to shoot up to ISO 12,800 at normal settings but can be manually set to shoot at ISO 102,400 -- four times the original D3 as well as other top tier DSLRs.
