Nikon Nikonos IV-A with 35mm f2.5The Nikon Nikonos IV A is a rugged camera with a thick metal housing and O rings everywhere. The Nikonos was originally designed for deep underwater use, though we have not pressure tested this camera, so you should consider it weather resistant rather than waterproof. Scale focusing with aperture priority exposure automation. Very good cosmetic condition, with some paint and finish wear. Lens has smooth focus and aperture movement, clean glass.