The Nikon N6006 Film Camera (also known as Nikon F601) is the first Nikon Film Camera to use 6v Lithium batteries, shifting away from the alkaline battery. Since they had more shelf life and could work under extreme temperature, the Nikon N6006 Film Camera had an extra edge over other Nikon Film Cameras. The Nikon N6006 Film Camera also features predictive focus tracking system, which tracks the subjectÂ’s speed of motion and adjusts the focus taking the shutter lag time into consideration. The predictive focus tracking system results in perfect auto-focusing. Another unique feature of the Nikon N6006/ Nikon F601 is its ability to print the image capture date and time on the film.