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htguy1
Joined: 30 Jul 2008
Posts: 99
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| Posted: Mon Sep 14, 2015 3:31 pm Post subject: Throw distance with HD10 lenses? |
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Hi,
I am looking to re-position my 9500LC that uses HD10 lenses. Can I get them to throw 19' 8" and still use the full raster on a 133 diagonal screen?
If not would HD10gt26 lenses work for that?
Thanks
God bless...
mark
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Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Sun Sep 27, 2015 3:25 am Post subject: |
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My PJ is 120 inches from my screen which is 4 x 8 feet or 108" diagonal. My rasters are almost fully maxed out.
You're looking at almost twice the throw distance of my setup but your screen is only 23 percent bigger.
Obviously this isn't going to work.
My recommendation is always to maximized your rasters, then position the PJ to get the screen size you want.
I think I don't have to explain the many reasons why you want those rasters maximized. But I'll recap, anyway.
More light output due to more engaged phosphor area.
Higher resolution capacity as scan line size is not variable. Only scan line spacing is variable, and when scan lines overlap,
you lose detail and effective resolution. Cramming a bunch of overlapped scan lines into the raster is not a win.
Longer tube life for a given contrast level.
You need to rethink your setup. Unless you're willing to compromise picture quality.
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