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Pol Walrant
Joined: 05 Jul 2007
Posts: 16
Location: Barchon-Belgium
TV/Projector: BarcoGraphics 1209s Iris2
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| Posted: Tue Aug 10, 2010 8:40 am Post subject: Suspicion of "moiré-effect" |
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I intend to buy a JVC-RS25.
My projection screen is a DRAPER Targa AT1200 acoustically transparent (16:9 - 203 x 114cm - 92" diagonal)
Few time ago I read in a magazine (a French magazine but do not remenber which one) that using a based LCD projector with a screen like the one I have could result in a "moiré-effect" caused by the pixels and the mini-holes in the screen not matching well together !!!!!!!!!!!!
Does anybody know about that possible problem ?
Also would it be a good idea to contact JVC and/or Draper ?
I do not have the opportunity to borrow a projector to do the test, so I will rely on your answer.
 
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WanMan
Joined: 19 Mar 2006
Posts: 10270
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| Posted: Tue Aug 10, 2010 12:35 pm Post subject: |
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Any fixed pixel (digital) projector runs the risk. I would think for something like the D-ILA panels (LCoS), you would be asking this on AVS more than anywhere else. At least there is a healthy group over there with JVC D-ILA projectors, including some using AT screens.
Unfortunately, it will be rather hard to find someone using the exact screen and projector. Have you discussed this potential problem with whatever JVC dealer you are considering getting the projector from? Inquire of returns?
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Trust no one. Absolutely no one. Advice of the board.
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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Pol Walrant
Joined: 05 Jul 2007
Posts: 16
Location: Barchon-Belgium
TV/Projector: BarcoGraphics 1209s Iris2
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| Posted: Tue Aug 10, 2010 1:13 pm Post subject: |
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I managed to get in touch over the phone with JVC Technical Service here in Belgium.
They say that their panel are not LCD and if I did not have problem with a CRT projector, neither should I have problem with theis D-ILA.
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Tue Aug 10, 2010 6:03 pm Post subject: |
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Did they mount your screen fabric diagonally, so the perforations don't line up with the pixels?
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WanMan
Joined: 19 Mar 2006
Posts: 10270
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| Posted: Tue Aug 10, 2010 10:07 pm Post subject: |
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| Pol Walrant wrote: | I managed to get in touch over the phone with JVC Technical Service here in Belgium.
They say that their panel are not LCD and if I did not have problem with a CRT projector, neither should I have problem with theis D-ILA. |
To assume only LCD projectors can be susceptible to moire is a wrong assumption.
True, D-Ila is not LCD. LCD is an acronym for Liquid Crystal Display. D-Ila is a trademark name for JVC's LCoS, or Liquid Crystal on Silicon. LCoS is also used by other companies like Sony, who trademarks their LC on Silicon as SXRD. Both JVC and Sony are now OEM sources for LCoS panels for other companies like Anthem and LG.
If you have not already bought the JVC RS25, you may want to see if you can get one as B-stock, or old stock. I am sure JVC will have new models announced next month at CEDIA, if not at IFA.
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Trust no one. Absolutely no one. Advice of the board.
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