Can someone tell me about lens filters and hoods?

Started Mar 28, 2008 | Discussions thread
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shopgirlhawaii
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Can someone tell me about lens filters and hoods?
Mar 28, 2008

I recently bought a D40 and 18-200VR but don't know what I need to put on it, why I need to do it, and what it will do to the pictures.

Background : we live in Hawaii, very close to the ocean (we get ocean spray on our windows all the time).

Someone in another thread suggested a UV lens filter - is this the best option? What does a lens filter do exactly? Would I need it all the time (inside too?) What does it do to modify the pictures. How do I care for it? Which one would be best to purchase?

The lens came with a lens hood, but I haven't used it yet. What would I use it for?

I used my 18-200VR outside only once (no filter or hood) and realized I should probably check here before using it more. I'm not sure what kind of damage can be done though.

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