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This topic comprises 5 pages: 1 2 3 4 5
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Author
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Topic: new trailers with cyan s/track ?
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John Pytlak
Film God
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 06-18-2002 07:55 AM
I have not heard of any plans for an early launch of cyan dye track (even just for trailers) in Australia. Best estimate for beginning conversion is still early next year, starting with a few selected pictures. If one or more territories already has a high conversion rate to red LED readers, that may hasten the conversion in those territories.Might those trailers have been ACCIDENTLY processed without analog soundtrack redevelopment? If so, the analog tracks would be either magenta dye only, or magenta+cyan (dark blue) dye, without any silver. True cyan dye tracks would only have cyan dye (sky blue in color). Analog Soundtrack Illustrations from Dolby Website ------------------ 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 06-18-2002 01:11 PM
Here are some links about silverless analog soundtracks: http://www.dyetracks.org/ (Contains links to many resources) http://www.componentengineering.com/webdocs/whydyetracks.pdf http://www.kodak.com/US/en/motion/support/dyetrack.shtml http://www.dolby.com/tech/ci.os.0012.reddye.html http://www.dolby.com/tech/ci.ot.0012.ScanRev.html http://www.uslinc.com/forum/index.htm http://www.uslinc.com/products/led.htm Here is the way silver is currently "redeveloped" in the analog soundtrack area: http://www.kodak.com/US/en/motion/support/processing/h249/h2409_05.shtml The process of applying a viscous bead of caustic developer to only the soundtrack area of the wet print film traveling at hundreds of metres per minute through a processing machine is a challenge! If the developer bleeds or splashes into the picture area, it leaves a "stain" of silver. If there are bubbles or variations in the developer, there may be "pops" and other noise in the sound. If the developer is not applied, you have no silver left in the soundtrack. Although these problems are relatively infrequent, they do occur, and are a significant source of print replacement and waste. There is also increasing regulation of hydroquinone (B&W developing agent) and silver in the environment, especially in some European countries. The fresh water required to "wash off" the soundtrack developer is a significant portion of the water used in film processing. ------------------ 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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Josh Jones
Redhat
Posts: 1207
From: Plano, TX
Registered: Apr 2000
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posted 06-18-2002 10:02 PM
Ken,A final washing bath is used I believe to remove any traces of developer from the film. getting the print wet will cause the emulsion to swell, making it easier for absorbtion. Also noted elseware on the site, and on Kodak's website, the Cyan tracks do have a lower signal to noise ratio(2 DB lower is the average) making it more dependant on Dolby SR noise reduction. Why of all colors did they choose cyan? it is the most prone to fading. Why not magenta, after all, its always the cyan layer that begins to fade first. Josh
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John Wilson
Film God
Posts: 5438
From: Sydney, Australia.
Registered: Dec 1999
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posted 06-19-2002 12:24 AM
Hi BradMaybe they were referring to the Scope versions of Minority Report. The Dolby Digital has a very higfh error rate 7-F but the SR track is just appalling! I had better sound at the drive in using tube amps 25 years ago than what these things give out of their SR tracks. Just a thought... PS: I've also heard nothing about changing to cyan. John ------------------ Too much of the rest of the film is given over to a romance between Padme and Anakin in which they're incapable of uttering anything other than the most basic and weary romantic cliches, while regarding each other as if love was something to be endured rather than cherished. There is not a romantic word they exchange that has not long since been reduced to cliche. No, wait: Anakin tells Padme at one point: "I don't like the sand. It's coarse and rough and irritating--not like you. You're soft and smooth." I hadn't heard that before. - Roger Ebert reviewing Episode 2. :)
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John Pytlak
Film God
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 06-19-2002 07:19 AM
If BOTH the Dolby Digital and Dolby SR tracks are poor, I suspect there may have been some slippage in the printer. Look at the Dolby Digital "bits" with a good magnifier/microscope, and compare them to a known good print. Are the bits clearly defined, or do they seem to be "smeared"?It's likely the sound negatives for each lab worldwide were made at the same time, so it's less likely the problem lies there. ------------------ 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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