Tim,


Quote Originally Posted by tkerr
People do use them to protect from dust and scratches, however some will claim there is a trade off in doing that.

The "trade off" is really only apparent if you use cheep filters. If you use B&W or Hoya you should see no effect in image quality.


Quote Originally Posted by neuroanatomist
while a UV filter has an advantage over
clear for a film camera, for digital there is no optical
difference

Like John said, you do not need the UV type on DSLRs, but they do no harm. Personally every new lens I get gets a B&W Pro UV filter as part of taking it out of the box for use.I get the UV out of habit from film days, really no other reason.


The other main reason to use a filter is that for many <span style="color: #ff0000;"]L lenses the filter is required to complete the weather sealing.


Chris