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Author
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Topic: Unprinted stock
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Kenn Fong
Film Handler
Posts: 47
From: Oakland, CA 94610 USA
Registered: Aug 1999
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posted 03-11-2000 01:46 AM
Our print of "Ninth Gate" arrived with seven feet of unprinted stock in the middle of Reel 4 which our projectionist did not catch in the makeup but did spot as it hit the screen in the first showing this morning.The stock had half a frame printed and then ran clear until the other half frame resumed. Our Head Projectionist tells us he'd never seen anything like this in his 30 years. ------------------
Kenn Fong
http://www.qwertyuiop.net
Screenwriter's Home Page
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John Pytlak
Film God
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 03-15-2000 11:44 AM
Exposing the print film to light before it is developed causes "fog", or a darkening of the image. The color and density of the fogged area depends upon the color of the light, and its intensity and exposure time. For example, exposing the print film to "white" light for a long period of time will usually produce totally opaque or black areas of film after it is processed. A little bit of "white" light will often show up as yellow colored fog, since the yellow layer on print film is the most sensitive to any light. If you see cyan, blue or magenta colored fog, it often is due to accidental overexposure to the amber-colored darkroom "safelight" illumination used by the labs. Sometimes the area around lab splices may have some fogging, because most labs use "safelights" to let the lab personnel see well enough to make the splices. The edges of the film may have some fog if the unprocessed rolls were left out under the "safelight" too long.Unexpected clear areas on a print usually mean failure of the printer lamp, or a miscue on the printer. Separate print heads are used for printing the picture and soundtracks, so it is rare for both picture and soundtrack areas to suddenly both go clear. Most labs view the prints on a small viewer as they come off the high speed processing machines, and fully inspect a percentage of prints by projection and soundtrack QC equipment. Fogging, printer miscues, soundtrack application problems, severe scratches, white dirt, etc. are usually caught, but a few problems sneak through. If a lab problem was missed during inspection, the reel will usually be replaced without question. ------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Professional Motion Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
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