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Author Topic: Petro Vlahos Dies Tim Asten Film Handler Posts: 98 From: Brighton, United Kingdom Registered: Nov 2006 posted 02-14-2013 05:49 PM                     The Blue & Green Screen effects pioneer has died aged 96...A true innovator. Hollywood Reporter article  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 02-14-2013 06:33 PM                        Wasn't he the guy behind the Motion picture research council? (70mm and 35mm test charts.) Louis  |  IP: Logged Jim Cassedy Phenomenal Film Handler Posts: 1661 From: San Francisco, CA Registered: Dec 2006 posted 02-14-2013 08:52 PM                     I believe Mr Vlahos was also the inventor of the "ultamatte" blue-screen TV system in the late 70's or early 80's. I recall the production studio I was working for at the time installing one. It was the first TV-blue-screen system that could handle fine detail like hair, and semi-transparent items like a water pitcher. It could also generate a slight 'shadow' so that whatever was "keyed" over a background looked much more realistic and didn't have that "pasted into the picture" look. It was a quantum leap above all other elctronic compositing systems avalable at that time. I think he got an award for it. I also recall seeing a patent for multi channel optical sound system he worked on some time in the 70's which used color separation of the R-G-B layers of color film to provide the different channels. (Just looked it up- - It's patent number US3969593- "Sound Recording On Color Film By Hue Modulation") In fact, if you do a patent search under Mr Vlahos's name, you'll see that he had dozens of patents in a wide area of film & television production technogies. A truly talented man!  |  IP: Logged

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