I'm new here, but have been reading for a while. Sounds like you're talking about the old kodak viewing filters, which kodak did discontinue. Calumet does make their own version though, which has 9 differant densities of each color, as opposed to the 3 for the old kodak ones. This is the product page for it is here: http://www.calumetphoto.com/ctl?ac.u...ilters&x=0&y=0 If that url doesn't work, just go to the calumet web site and search for "viewing filters"