I am having big trouble. I have a canon 70-200 f/4L and I some how got my CP filter stuck. I was shooting at the beach and it was very windy. A number of days later, I tried to remove the CP filter and I can't. I can't imagine salt got between the threads but I am out of ideas. Possibly I just put it on so tight but I don't remember it that way.
Does anyone have suggestion on how to get the filter off? Can a camera store assist? What do I do? I'm so lost...
Thanks in advance for any assistance. Mahalo