Well, I just bought a Hoya RM 72 IR filter in 67 mm. size. I'd
like to use it on other lenses with step-up rings. I wish there
was a solution to fitting it onto my FA 31, but of course that
shade is in the way. I suppose I could knock the glass out of 5
or 6 58 mm filtes, then screw them one on top of the other until
I clear that shade, then attach the step-up ring and the 67 mm.
filter. Can anyone think if another way?
Thanks,
Joe