Early Nikon F Instruction Manual.  type_Continuous Lighting compact standard lens for film

compact standard lens for film and digital Nikon F-mount SLRs

It may also work with other brands

The Pentax PC-55 is a very simple point-and-shoot camera with a relatively wide 30mm lens

This hood is sometimes labelled as an HS-1

or without the disc for a more direct look

Early Nikon F Instruction Manual. &nbsptype_Continuous Lighting compact standard lens for filmVery Early Nippon Kogaku K. K. (Nikon) instructional manual for the F. English language copy. Complete, but may include annotations, highlighting, etc., which do not impede readability. Image is for illustrative purposes only, actual item may differ from that pictured.