I have a 40.5 circular polarizer for my Oly 5060. I was wondering if you need to lock your exposure first before adjusting the filter? I've played around a little bit but I have a hard time seeing the differences on the LCD. Some of the pictures came out ok when I download them. I'm just not sure if it's me or the camera. I know it's best to have the sun over your sholder for the most effect (at least that's what I think). I just want to make sure that the camera doesn't compensate for the adjustments before I press the shutter half way to lock everything.