[jhv]

alright, so i picked up a 'whatever' polarizing filter from frys this afternoon. im planning on using it for my kit 18-55 lens with my XSi. i buy it, get home, put it on my lens and it doesnt fit snug, should it? i just bought one that said 55mm polarizing filter. it fits within the focus ring, but doesnt stay. am i supposed to hold it every time i take a shot? also, i can turn the polarizing filter about itself, if that makes sense. i have no idea what thats about