Help! can't unmount my filter

[Dallasphotog]

The little rubber mats that work for jar lids also give enough grip to get the filter turning when they stick. My circular polarizing has a habit of sticking to the EF70-200 F/2.8. I've always gotten it off with the rubber grip. For a second use, the mat makes a nice place to sit filters while you're making a change. I hate dropping filters into the Plican caseor balancing them on some makeshift surface.

[Jon Ruyle]

I second Nhut's recommendation for the wrench. I used to have tons of problems with my 77mm b+2 thin circular polarizer. No problem with the wrench.