Robert Hooper , Jun 03, 2008; 02:23 p.m.
No special filter is required, Mel. Lots of folks put a clear or UV filter on their lens to protect the front element from dirt, salt spray, et-cetera, but this is totally a matter of personal choice. Some feel that using filters in that way unnecessarily degrades their images. Personally, I use clear or UV filters on all of my lenses except while shooting in the studio. Now that I shoot mostly with a digital camera, The only other filter use is a circular polarizing filter.