Grey Cards

Nope. We all do it. Terrible addiction.

I use an Expodisc and shoot a custom WB from that. I ordered the largest one that it fits in front of all my lenses. I use the neutral and the warming disc. Love them.:) If the lighting is really poor and involves artificial lighting, I just use a white sheet of copier paper (because it's thinner) and take an image of that in custom.

http://www.expoimaging.net/product-o...words=ExpoDisc