Brief Scenes

What are camera filters made of?

Are the materials used for camera filters, the best there is?

Glass with a coating that filters out UV or allows only red or polarizes light etc. Most are coated with a coating that reduces lens flare.

http://en.wikipedia.org/wiki/Photographic_filter

http://www.hoyafilter.com/products/hoya/hoya-02.html

http://www.schneideroptics.com/info/faq/bw.htm#q27

How To Stop Your Camera’s Polarising Filters Breaking! … by Karl Taylor