Prof Pixal, By "Dye Transfer" I mean the Dye Tansfer process. I never said anything about "Sublimation". You can read about it on several websites. Very few people still do it. Largly because Kodak (Those missgiuded Bussiness Men) stoped making the Matrix film. The later is film without hardener which has actual thicknes variation controled by the various densities of the negative.