Nikon has announced its latest FX-format HD-SLR, the D610, successor to D600. Like the D600, it offers a 24.26 megapixel FX-format (35.9 x 24mm) CMOS imager, EXPEED 3 image processing engine. The continuous shooting is improved to 6 fps from 5.5 fps, and a quiet mode is added to 3 fps burst shot in the D610.