Polarizer on your Contax
Polarizer on your Contax
It's very inconvenient, but possible. You will need to look through the polarizer and rotate it to get the exact effect you want, and then put it on your lens oriented exactly the same way.
Experiment a bit before you use it for anything important, as it might cause problems with the light meter or autofocus. If you have problems like that, find a circular polarizer which will usually eliminate such issues.
I know some RF manufacturers offered special polarizers that would swing up to cover the viewfinder to rotate it properly and then back down for the lens before you take the shot. I have never heard of such a thing for the Contax G's.
Rangefinders are fun, but hardly convenient. For long lenses, macrophotography and filter effects there is nothing like an SLR.
Cheers,
Dez