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This topic comprises 4 pages: 1 2 3 4
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Topic: emulsionside???
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Leo Enticknap
Film God

Posts: 7474
From: Loma Linda, CA
Registered: Jul 2000
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posted 09-04-2002 02:50 AM
On the gloves issue I agree totally with Manny - latex ones are preferable to cotton in every conceivable way. They do not become saturated with perspiration which then finds its way onto the film. Being thinner, it is easier to feel for defects on the film edges while winding. They don't shed fabric particles, and they are less likely to transfer dirt back onto the film surface when overused.I know that some people have a latex allergy issue (and I've often thought this must have the potential to cause serious problems with another... ahem... 'activity' which can involve the use of latex devices, but the less said about that the better!), but for the vast majority of people who don't, I'd say that they were a far better option than cotton ones. I really don't know why they aren't used more extensively by archivists. And as for Brad's belief that anyone who feels the need for gloves at all is an incompetent film handler, I think we just have to live with the fact that some people have a higher level of manual dexterity than others. I would tell projectionists I was responsible for that it is a matter of personal choice, the bottom line being that there must be no fingerprints on the films. I now take a similar line with trainee archivists, though I do insist on gloves being used for certain types of element (e.g. tinted and toned elements - some of the dyes are irritant and/or toxic, and can shed during examination).
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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 09-04-2002 07:07 AM
For 35mm release prints, standard SMPTE 194 specifies: "The photographic emulsion shall be on the side of the film which faces away from the projector lens". In other words, if you view the film with the image upright and the analog soundtrack to the left, the emulsion side is toward you. The image "reads" correctly from the emulsion side.------------------ 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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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 09-04-2002 09:00 AM
SMPTE Recommended Practice RP39 specified an emulsion-in winding orientation for optimum performance during projection. Work done by Kodak with 35mm TRIACETATE prints showed better focus stability if the winding orientation was always emulsion-in: "Effect of Winding on the Projection Performance of 35mm Motion-Picture Film", by Paul H. Preo and Eric A. Yavitz, SMPTE Journal, June 1965, 74:521-525This work has not been redone for polyester print film, and the preferred winding orientation of today's polyester prints seems to depend mostly upon the curl of the film, which is affected by the drying of the film after processing and the relative humidity of the projection room. Use the winding orientation that gives the best performance for platter transport and focus stability on your equipment. ------------------ 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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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 09-04-2002 01:21 PM
If you prefer to wear film handlers' gloves, that's fine. As you note, they protect your hands, as well as the film. The bottom line is that you should handle the film without putting fingerprints on it or getting it dirty. I have seen film handlers using gloves that were black with dirt.  True story: A few years ago, I was visiting a newly opened 16-plex theatre during a SMPTE-sponsored behind-the-scenes "open house" tour. I observed one of the newbie operators at the rewind bench, splicing together trailers to go onto the platter. He was wearing thick, fuzzy woolen winter gloves on both hands. When I asked why, he said he was told he must wear gloves when handling film.  ------------------ 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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