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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Mon Dec 07, 2009 3:22 pm Post subject: |
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| MaximRecoil wrote: | | dturco wrote: | Have you read the set up instructions on Curt's site? No it's not for your machine exactly ,but all CRT's mechanical alignment are basically the same. It's a great and necessary place to start.
http://www.curtpalme.com/CRTSetupGuide.shtm |
Excellent, thanks.
So in simplified terms, it looks like I have to do rough focus and convergence adjustments manually, and then fine-tune it through the menu setup controls. This is not going to be fun, I can see that already.
I wonder what the advantage of using 3 monochrome CRTs is as opposed to using a single full color CRT in a projector (that would make setup a breeze). Is it because a single full color CRT needs a shadow mask, which drastically reduces electron beam efficiency, limits maximum viewable resolution to the shadow mask hole and phosphor dot pitch size, and would probably be distractingly visible when the image is blown up to typical projector screen sizes?
Still though, I have to wonder what it would look like if you were to stick a big lens in front of a Sony GDM-FW900 PC monitor. If I had to guess, I would say that the image would look great, but would be lacking in brightness. |
Aside from everything you mentioned, you have much less than 1/3 the phosphor area to produce the same brightness (Due to the fact that the phosphor is small dots instead of continuous, and only one tube). It would fry in no time at anything approaching front projection brightness (have you ever looked into your lenses at viewing contrast ratio? Wear sunglasses first).
The lack of any kind of pixel structure is what makes CRT PJ's so flexible (display ANY refresh and resolution) and have such a "smooth" image. I wouldn't trade that image quality and flexibility for a few hours of setup.
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MaximRecoil
Joined: 28 Nov 2008
Posts: 22
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| Posted: Mon Dec 07, 2009 5:56 pm Post subject: |
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| CRT_Ben wrote: | Aside from everything you mentioned, you have much less than 1/3 the phosphor area to produce the same brightness (Due to the fact that the phosphor is small dots instead of continuous, and only one tube). It would fry in no time at anything approaching front projection brightness (have you ever looked into your lenses at viewing contrast ratio? Wear sunglasses first).
The lack of any kind of pixel structure is what makes CRT PJ's so flexible (display ANY refresh and resolution) and have such a "smooth" image. I wouldn't trade that image quality and flexibility for a few hours of setup. |
Yes, that's true. Resolution potential on a monochrome CRT is essentially infinite; limited only by the capabilities of the hardware driving it.
I guess it could be done satisfactorily for a B&W projector. However, you'd need e.g., a 27" B&W CRT to equal the area of three 9" CRTs, and there is probably no such thing. It would be great if you were into really old movies, or certain newer movies like Schindler's List.
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