Canon 72mm UV (Made in Japan) Glass Filter These filters are used by many photographers to
protect the front element of their lens from abrasions, dust, and moisture. They
also have a very subtle warming effect, which can be useful to counter the
"cool" colours you sometimes get in bright sun or in shade. They're available in
sizes to fit most EF lenses.
For more information about, Canon 72mm UV (Ultra Violet) Glass Filter (L-39 Sharp Cut) .