So, I was skipping around the internet today and watched some of the video on the http://abetterbouncecard.com/ site. I noticed a link on the bottom of his page regarding a white balance filter. This is actually something I had thought of making a while back and never thought to see if something like this actually existed already. Does anyone use these: http://www.colorright.com/ http://www.bhphotovideo.com/c/produ...ging_EXPOD67_ExpoDisc_67mm_Digital_White.html Seem kinda steep for what they do. Couldn't you do the same with custom WB and an index card (or a bounce card that you made)?