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Author Topic: Anamorphic lens in digital scope? Frank Angel Film God Posts: 5305 From: Brooklyn NY USA Registered: Dec 1999 posted 03-30-2012 12:59 PM                        Some of my friends on the Drive-In group asked about how digital deals with scope. Their concern, of course, is always getting every lumen of light out of the system for those huge, zero gain screens. I have done a search here because I thought I read quite awhile back that scope in DCinema CAN be done using an anamorphic lens as is done with film scope thus not loosing top and bottom light since the whole chip will be used instead of letterboxing on the chip and zooming. I know in non-DCI systems projection scope can be done either way. Some even have motorized jigs that can move the anamporhic lens in front of the prime. Can this, or should I say IS this done today in DCinema?  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 03-30-2012 01:32 PM                     Wrong forum...the short answer is YES. Anamorphics can be used in DCI systems and they are "REQUIRED" to be motorized for "unattended lens changes." At present, Christie, NEC and Sony (at least they list it) offer them in the US. Kinoton, I now offers them as well. Using an anamorphic will yield about 23% more light in Scope. They will help balance the light between scope and flat so that the lamp lasts longer too. -Steve  |  IP: Logged Frank Cox Film God Posts: 2234 From: Melville Saskatchewan Canada Registered: Apr 2011 posted 03-30-2012 02:39 PM                        I have one on my Christie projector. My screen size is apparently such that a standard zoom lens alone wouldn't work. The tech who installed it told me that it was the first time he had installed an auxiliary lens. The scope cue automatically drives the lens over into place.  |  IP: Logged Frank Angel Film God Posts: 5305 From: Brooklyn NY USA Registered: Dec 1999 posted 03-31-2012 04:39 PM                        Thank you, guys, and thanks for moving this post. Also, what is the actual physical AR of the DLP chip? Is it 16:9, 4:3?  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 03-31-2012 04:55 PM                     Flat=1.85:1 To be more precise, the native full pixel raster is 1.89:1 (2048*1080). For flat features, it is used to 1998*1080, for 'normal' scope, 2048*858. Double each dimension for 4k. With an anamorphic lens, the 2048*858 scope image is stretched vertically to 2048*1080 in realtime by the ICP in the projector. - Carsten  |  IP: Logged

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