Polarizer gone bananas

[condorman]

Hi Chums,
I got a new Polarizer and it,s turning the sky purple and the bottom half of the pic metallic green! Like real weird apparently.
I,m just wondering, when I first fitted it there was some dust on it, I wiped it off with my T shirt but there was some cooking oil on my T shirt ( Minger) so then I spent an age getting the cooking oil off.
You know that metalic look from oil on water, thats what my pics are like. Can I put some spirits meths white spirit on a cloth an wipe it off or will that affect the coating on the filter???
Any advice would be great please.
Don't eat fries and take pics at the same time, is a good one.
Mark

[VTphotog]

Hope you didn't get any oil between the two parts of the filter. If it's just on one surface, you should be able to clean it with Isopropyl or Ethyl alcohol. Try to get as high a percentage as you can find. (less alcohol means more water, and takes longer to dry and may leave residue).
If you haven't rubbed too hard, the coating should be fine.

brian

[condorman]

Great, Thanks Brian,
I shall give that a go, I,m sure it's just on the outer glass and nothing inside. Hope it works although if it doesn't stop the strange color effects ill keep the filter for surreal effects.
Mark