On 2 Mar 2002 at 13:34, Rami wrote: > So polarization is not the same as a coating which reduces/ eliminates UV-A or UV-B > right? That is correct. > Is there a way to check the coating (or lack thereof)? Not that I'm aware of, without a spectrophotometer. OTOH, almost any old glass lens will filter one of those UVs -- I forget if it's UV-A or UV-B. rafe b. aka terrapin