d90 user, i bought a "pirated" 77mm filter tru online which cost me around 15-20 bucks ... i bought it for testing purpose..
when i use it with my 70-200mm f2.8 lens.. it seems can't focus well... photo taken was kinda slight double image.. is polarising filter suppose work in this way? or something wrong with the fake filter?
when i use it with my 70-200mm f2.8 lens.. it seems can't focus well... photo taken was kinda slight double image.. is polarising filter suppose work in this way? or something wrong with the fake filter?