Lens hoods are primarily designed to prevent unwanted straylight from entering the lens by extending and shading the end ofthe lens. In addition, since the end of the lens is extended, youalso get the added benefit of some extra protection from accidentalimpact.

Dedicated lens hoods are designed to match the specific focallength of the lens it was designed for.

For Canon ET-83 II Lens Hood for EF 70-200mm f/2.8LLens

for canon ET-83II lens hood