bayonet hood

[RebaHalle]

DH bought me a new lens for my camera. The camera shop also sold him a bayonet hood. And a camera bag. All this and we weren't suppose to be buying presents for each other this year as we bought a new TV earlier in December.

Anyway, what is the purpose of the bayonet hood and how do I know when it is needed? I am just assuming that it is for bright sunlight, but really don't know.

[Linda1]

I've been told they do help keep out light that might cause flare and also heps protect the front element of the lens from bumps. I never remember to put mine on.

[imported_Jimbo]

I've been told they do help keep out light that might cause flare and also heps protect the front element of the lens from bumps.

and it looks cool... :P

[3TailsWaggin]

I always keep a hood on my long lenses. It helps prevent flare and also protects the front of your lens.

Try going outside on a sunny day and use your hand as a "visor" above your eyes. See how much better you see? This is the same effect a hood has on a lens.