Leica Metal Lens Hood w/Cap for 75mm and 90mm f/2.5 Summarit
This is a demonstration store. You can purchase products like this from Leica Store Miami.This Leica Metal Lens Hood with Cap is specifically designed for the 75mm and 90mm f/2.5 Summarit - M lenses.
Lens hoods are primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact.