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This topic comprises 4 pages: 1 2 3 4
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Topic: emulsionside???
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John Pytlak
Film God
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Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 09-03-2002 02:05 PM
Here's some information about film base and emulsion: http://www.kodak.com/US/en/motion/support/h1/base.shtml The image on a 35mm release print normally "reads" correctly when viewed from the emulsion side of the film. If you look at the print with the image upright and the analog soundtrack along the left side of the image, the emulsion side of the film is toward you. It's poor practice to determine the emulsion side by wetting the film or sticking it to your lips or tongue . (Although some still use the technique to tell which side is the emulsion on unprocessed film in a darkroom). ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Research Labs, Building 69, Room 7525A Rochester, New York, 14650-1922 USA Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243 e-mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion
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Manny Knowles
"What are these things and WHY are they BLUE???"
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Posts: 4247
From: Bloomington, IN, USA
Registered: Feb 2002
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posted 09-03-2002 06:45 PM
When I was just starting out as an editorial apprentice, it was quite acceptable for me to use my lips to determine which was the emulsion side. In fact, that's how they told me to go about doing it.Having said that, it was also explained to me that it was only okay because I was a novice and I understood quite clearly that the day would come when I couldn't get away with it anymore. Try looking at the film at different angles. If the film is always shiny (no matter the angle at which you are holding it) then you are probably looking at the base side. If the film looks "dull" from certain angles, then that is the emulsion side. It's one thing to be handling the film if you're just experimenting with old trailers or whatever, but you should try to always wear white cotton gloves when handling film you actually plan to show. Latex gloves are more readily available and they are okay for general operations (e.g. lacing/threading) but they will probably get torn or sliced if you hold the film while it is in motion (e.g. rewinding) or if you are splicing. ~Manny
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John Pytlak
Film God
![](http://www.film-tech.com/ubbmembers/331cap.gif)
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 09-03-2002 09:48 PM
The "indented" surface is called a "relief image", caused by a difference in the hardening of the emulsion during development and bleaching in the process. The KODACHROME process and the old ECP process that used dichromate bleach gave a very obvious relief image. Today's print films have a much less obvious relief image, but if you look closely, it is a good guide to the emulsion side.If you can properly handle the print by the edges only (no greasy fingerprints on the picture or soundtracks!), gloves are optional. Always wash and dry your hands before handling film however. ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Research Labs, Building 69, Room 7525A Rochester, New York, 14650-1922 USA Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243 e-mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion
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