Where do I find a good white balance gray card?
http://www.outbackphoto.com/workflow/wf_46/essay.html Is a good article listing several choices of gray cards. Two of the best values are listed below. In brief, a good gray card must be neutral in color. Some of the old industry standard gray cards were only designed to calculate exposure and they actually have a slight color cast that will not work properly for digital white balance WB. (top)http://www.rawworkflow.com/whibal/ Shows quality of several different white, gray cards. Has a link to their order page. Digital gray plus white, black and a special focus patch from $29.95 plus shipping.http://www.rmimaging.com Single digital gray card from $14.95 plus shipping.
