In article , Ed Mullikin
wrote:

Regarding a UV filter; I have nearly always used one but I've heard the
arguement, "Why pay a lot of money for a Zeiss (for instance) lens and then
crap it up with a dime store UV filter?" Any comments?

don't put a cheapo filter on an expensive lens. get a hoya or b+w
multicoated filter, not a no-name uncoated questionable quality filter.