ITDOO lens hood for the Leica Summaron 3.5cm and Summicron 5cm lenses.

It is a conical, metal shade designed to prevent lens flares and protect the front lens element.

The hood is compatible with both the 3.5cm (35mm) Summaron and 5cm (50mm) Summicron lenses.

This specific model is the ITDOO, produced starting in 1956.

It features a velvet lining for reverse positioning and storage on the len