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This topic comprises 2 pages: 1 2
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Author
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Topic: LCD TV image quality
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Frank Angel
Film God
Posts: 5305
From: Brooklyn NY USA
Registered: Dec 1999
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posted 07-11-2005 12:26 PM
I have a friend who swears by CRT projection, and after seeing his setup, so do I. He claims the ones made in the 1980s and designed for corporate use, then in the $15k to $25k range, can now be gotten used for 1/3rd their original high cost. And there seems to be a large number of these used units available because the corporations which were their original intended market quickly retired these projectors once the small portable LCDs and DLPs became available.
The three gun CRT projectors are big and VERY heavy; they certainly are not portable, which is a big disadvantage compared to the much smaller current crop of vidprojectors. The CRTs also had the disadvantage of having a virtually fixed image-size-to- throw-distance -- another fairly big negative for most people.
But all that aside, if you can live with these three gun monsters in your home theatre, the picture quality blows everything else out of the water, be it DLP or 3LCD. CRTs give super sharp, brilliant images, saturated colors and real, black-blacks. And from what he says, you never have to worry about what signal you feed it -- there is nothing it cannot reproduce. Because of the nature of the CRT system itself, these units will handle any HD signal up to 2500x2000 and they can produce images widths to 20ft-25ft wide.
Unfortunately they cannot compete with DLPs and 3LCDs in the brightness department. This isn't too much of a disadvantage if you intend to keep the room dark (hence "Home THEATRE," not "Home Den") and when a silver screen is used, the brightness looks just fine.
I never knew about the larger CRT projectors until my friend called me over to see his newly purchased, newely installed Sony. We watched DVD OKLAHOMA! and I was very, very impressed. I do know about CRT projection because the first thing I did when I got my first apartment, I bought what was then only in its test marketing stage, Advent's VideoBeam. It isn't the size or the resolution of these larger units, but I purchased it in 1977 and the image hasn't deteriorated at all. In all these years, I've only had to replace the green gun and a flyback transformer. Other than that it is one awesome piece of equipment. Blacks are TOTALLY black. And as Kloss told us at a demo, interlace is not a negative in and of itself, it's only when the circuitry can't line up the lines perfectly that they are a distraction. He claimed that his VideoBeam had better interlace accuracy than broadcast monitors. He was right; from 3 feet away, you cannot see any line structure at all.
Anyway, that's my take on 3 gun CRT video projectors.
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![[Big Grin]](biggrin.gif)
I gotta concede though that the most current generation of plasmas look pretty damn good.
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