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Author Topic: variable density prints Joseph Matteo Film Handler Posts: 26 From: fullerton ca usa Registered: Dec 2006 posted 05-04-2011 08:48 PM                     Has anyone had any experience with this sound format using red led.Last week i received a sos the projectionist tried to play treasure island that had a variable density track.The projector was a Norelco AA 35/70 all other films played fine but the treasure island was completely silent.the film was cancelled.  |  IP: Logged Mitchell Dvoskin Phenomenal Film Handler Posts: 1869 From: West Milford, NJ, USA Registered: Jan 2001 posted 05-04-2011 09:58 PM                     I've never had a problem with variable density tracks on red led readers. They should play just fine, unless the density track itself is magenta.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-05-2011 06:40 AM                     Many density tracks are indeed magenta. I have run into this problem as well. If they are B&W then they should play fine (presuming they got their density correct...and many don't).  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 05-05-2011 11:19 AM                     I have never had an issue with variable density and red readers wich treasure island is it was it the disney (IB tech so it would have a silver track) or the black and white one  |  IP: Logged Kirk Futrell Film Handler Posts: 95 From: Nashville, TN / U.S.A. Registered: Nov 2008 posted 05-05-2011 12:26 PM                        What sort of processor was it running through? Or would that not matter (seems like it would)? I've never had problems on Dolby systems.  |  IP: Logged Stephen Furley Film God Posts: 3059 From: Coulsdon, Croydon, England Registered: May 2002 posted 05-05-2011 12:44 PM                     quote: Kirk Futrell What sort of processor was it running through? Or would that not matter (seems like it would)? I've never had problems on Dolby systems. It shouldn't make any difference. It's the variation in the amount of light falling on the cell which generates the signal. Whether that variation was caused by changes in optical density or in width of the track doesn't matter; varying amount of light generates varying electrical signal and at the point where this is fed into the optical pre-amp in the processor it makes no difference.  |  IP: Logged Kirk Futrell Film Handler Posts: 95 From: Nashville, TN / U.S.A. Registered: Nov 2008 posted 05-05-2011 01:03 PM                        So much basic stuff for me still to learn... Thanks.  |  IP: Logged

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