The lens hood provides a cost-effective solution to the problems caused by sun glare rain and wind-blown debris and is also valuable in providing protection against knocks and damage
In addition, since the end of the lens is extended, you also get the added of some extra protection from accidental impact
Lens hoods block side glare and augment the protection provided by filters to the lens surface and ring
The design makes it firmly on the lens
Reversible for easy storage - will not affect the use of lens cap