John wants to know how he can add a polarizing filter to his point and shoot camera. Leo says some of the point and shoots have screws on the front that would allow him to add a filter, which is the easiest way to do it. There's a variety of polarizing filter he could get, and generally, he'd want a circular one. If he doesn't have threads on the point and shoot, he'll need some way to mount it on there. John also looked at a magnetic filter, but his camera doesn't have that either.