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At the moment I'm in a field of beautiful yellow sunflowers which contrast against the deep blue sky. I want to use my 17 mm with a polariser filter but I can't get the UV filter off the front.  Using both filters together on such a wide lens will darken the corners of the frame ( vignetting ) I've tried everything except hitting it with a stone!

Looks like I'll shoot anyway and see if I can correct it later.

Posted by tom waugh at 13:03