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General HD (720 / 1080) Acquisition
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Old June 13th, 2005, 04:10 PM   #1
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Digital projection at Landmark, no need for film out

http://news.yahoo.com/news?tmpl=stor...ibd/200567tech

Projectors are Sony 4K. 2K projectors better than optical ones. 4K means 4x as many pixels as 2K.

Shoot with your HDV camera, show it digitally. Save big money!

Radek
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Old June 13th, 2005, 08:41 PM   #2
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the 4k projectors have 4096x2160 resolution, 4x that of full HDTV (1920x1080). The contrast ratio is excellent at 1800:1, but they use a Xenon lamp, so they'll need to be color corrected, which should done with built-in software.

There is a 5k and 10k lumen version available.
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Old June 13th, 2005, 10:07 PM   #3
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1920x1080 is 2K. Now that have 4K projectors and 4K DI (digital intermediate) used in digital film post, 4K cameras should next. It looks like consumer and prosumer stuff is moving to 720p/1080i, pro stuff to 1080p and digital cinema to 2160p.

Sean, do you know how many lumens are optical projectors and if use xenon lamps? What is xenon? What kind of spectrum it have? Is bluish?

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Old June 14th, 2005, 10:37 PM   #4
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Xenon lamps have a bluish cast. For a long time the high-powered slide projectors (man, am I old or what?) were Xenon. Sony has 2 versions of their 4k projector. 1 is 10k lumens the other is 5k lumens. 5k would be ok for up to a 20' screen or so, after that the 10k should be used. I'm not sure about real film projectors light output, it would probably vary from brand to brand and model to model, as well as the age of the lamp...but the digital projectors' brightness will vary as the lamps/modules age, too.
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Old June 16th, 2005, 08:11 AM   #5
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The problem with optical projectors is theaters stick in smaller lamps, don't change lamps on time, so some theater screens rather dull. I don't know if 10K lumes is lot, but will resolve at least 2,000 lines wheras optical projectors hardly resolve 1,000.

Good bye film!

Radek
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Old June 22nd, 2005, 01:00 AM   #6
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Many of the Landmark theaters are also able to project Windows Media HD (up to 1080p) with 5.1 surround. They've been able to do this since 2004.
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