How To Mount A Hoya Infrared Filter To A Canon A650? I purchased a Hoya IR filter (R72, 58mm, pitch 0.75) that is supposed to fit on a Canon A650 -- so said all the literature I read. I'm a beginner and figured that it would click/snap/screw on, but it does not fit at all. It seems too big for the stock lens that I have. I have no idea where to go from here so I need help. Any ideas? Thanks in advance.