I was on vacation when my polarizing filter has (again) tightened the lens thread so that I could not unscrew it again easily. After some time and a lot of patience, I managed thankfully finally has to solve the polarizing filter on the lens. Had I failed, I would have to walk around the entire vacation with attached filter, which was not a great idea. Imagine, it would have been a gray filter - Holiday pictures I would have made sure no more ...
So I firstonce directly concerned me after the holiday this filter terminals here, with rotary mount (I use filters with a diameter of 77 mm) playing slightly loosen the filter of all kinds, including those from the lens. For me, this filter clamps are therefore an often-underestimated tool that has since been always carried in my camera bag.
