Most if not all DB are lacking any automatic WB settings. We have 2 options - use presets or shoot a grey card. Recently I had a photo session, using Lee square linear polarizing filter and all shots come up with quite a greenish cast though I took a capture of grey card before, to set a custom white balance
So, the question is, what custom WB technique do you use when shooting with filters? Would it be a right way to setup polarizer and then take a custom WB shot?