An unique piece! This handmade pinhole camera ring has a cylinder that holds the paper or film.  The lathe turned end cap holds the film & you turn the end to expose the film.  Simply turn the end cap back again to shut the shutter- the pinhole is always open – by rotating the inside sheet metal, you can control the light hitting the film.  

Sterling silver & brass. Fabricated, lathe turned, cold connections with mini bolts and threaded rod.