I've noticed something weird when using my HOYA circular polarizing filter at full effect. When doing landscapes it appears to add a slight yellow colour cast, even though there is an improved beautiful contrast between yellow, red and green foliage, whereas at minimum effect there seems to be no cast.
There are filters and then there are filters but I wouldn't expect this result.
I'd appreciate any thoughts or comments on this.
Most polarizers tend to impart a slightly cool cast to a scene's color balance, to the extent that warming polarizers have been marketed to counteract it. Can you just dial out the effect with the white balance?