Daniel D. Teoli Jr. Posted January 28, 2020 Share Posted January 28, 2020 Anyone ever use Sonochrome? https://en.wikipedia.org/wiki/Sonochrome Was the tint stable or did it come off? I have cleaned a few dyed 16mm films from the late 20's and some of the tint comes off. Don't know if they were Sonochrome though. Link to comment Share on other sites More sharing options...
Premium Member Stephen Perera Posted January 29, 2020 Premium Member Share Posted January 29, 2020 I'm hoping we get Ferrania in 16mm Link to comment Share on other sites More sharing options...
Premium Member Simon Wyss Posted January 29, 2020 Premium Member Share Posted January 29, 2020 Why should it come off? The base is tinted in the mass. Read https://filmcolors.org/timeline-entry/1330/ Description Kodak Sonochrome was a specially prepared tinted film for sound film that did not interfere with the spectral sensitivity of the photo-electric cell for the reading of the optical sound track. The 17 Sonochrome tints were dyed in mainly light hues for maximum light transmission, with the exception of purple, blue and green that had transmissions below 40%. The hues were given poetic names to express color-mood associations. Eastman Kodak, Agfa, Pathé and others produced pre-tinted film base before the advent of sound. Pre-tinted stock can be identified by scratching the emulsion off in a small area outside the frame revealing the colored film base. Link to comment Share on other sites More sharing options...
Daniel D. Teoli Jr. Posted January 29, 2020 Author Share Posted January 29, 2020 (edited) Dunno? But dye is not always stable Simon. I used film cleaner and it removed some of the dye on the 16mm. And don't know if it was Sonochrome. I will see if I can scratch them to test. You can see here that Kodak dye transfer dyes were water soluble...at least the ones used for making paper prints. My tests show Kodak dyes start running with as little as 30 minutes of soaking prints in water. nsfw https://danieldteolijrarchivalcollection.wordpress.com/2018/10/03/inkjet-water-damage-tests/ Edited January 29, 2020 by Daniel D. Teoli Jr. Link to comment Share on other sites More sharing options...
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