I am just about to buy a new G2 kit with 28, 45, & 90mm. I shoot mostly Black and White and for landscapes often use a polariser and red filter together to get a really dark sky and bright whites. This is fine of a manual SLR. I would be interested to hear how other G2'ers use filters and how the camera copes with polarisers. Also, the system being auto focus, is it best to use a circular polariser? Does contax produce these filters and if not, which make do people recommend to compliment the Zeiss lenses?