WHAT DOES A LENS HOOD DO?

Everytime I see one of my photography understudies with the lens hood on in reverse, I know they don't comprehend what the lens hood does. The lens hood is intended to diminish flare and secure the lens, in addition to other things.

WHAT IS THE PURPOSE OF A LENS HOOD?

The lens hood is a bit of plastic that clasps onto the front of a camera lens and amplifies past it. Lens hoods fill two essential needs: (1) decreasing lens flare, and (2) shielding the lens from harm. The expected motivation behind the lens hood is basically to decrease lens flare, however the insurance it gives to the glass components of the lens is a valuable reaction.