Nikon Nikonos IV-A with 35mm f2.5 iso_3200 so you'll want to keep

so you'll want to keep it well maintained to preserve its condition

stiff diaphragm

the focusing works well

the camera mount up top is similar

Nikon Nikonos IV-A with 35mm f2.5 iso_3200 so you'll want to keepThe 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.