ALL SEEMS TO BE WORKING BUT LOCK ON THE BACK DOOR IS BROKEN SO IT HAS TO BE SECURED WITH A STRONG DUKT TAPE AFTER FILM IS LOADED he Nikon N6006 (released as the F-601 outside the US) is a highly capable, late-1980s to early-90s 35mm autofocus SLR. It bridges the gap between classic analog photography and modern automation, offering built-in TTL Matrix metering, autofocus, automatic film advance/rewind, and a useful pop-up flash.