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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Tue Nov 02, 2010 10:59 am Post subject: |
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| opv wrote: | | As far as I know, the HD120 have the shortest throw between all the optional lenses. |
The HD-10L lenses have the shortest throw distance at 76 inches.
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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Tue Nov 02, 2010 11:00 am Post subject: |
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| opv wrote: | | I think there is another problem with hanging the PJ so low, the light from the screen comes back into the tubes and damages the contrast, am I right? |
Yes this does happen.
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opv
Joined: 18 May 2010
Posts: 202
Location: Emek Hefer,Israel
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| Posted: Tue Nov 02, 2010 11:01 am Post subject: |
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| jkruger wrote: | | opv wrote: | | As far as I know, the HD120 have the shortest throw between all the optional lenses. |
The HD-10L lenses have the shortest throw distance at 76 inches. |
OK, that's good to know, even if my HD120 do focus, I'll still have the HD10 for a bigger screen.
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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Tue Nov 02, 2010 11:05 am Post subject: |
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Have you read the sticky thread titled "All About Lenses"?
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opv
Joined: 18 May 2010
Posts: 202
Location: Emek Hefer,Israel
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| Posted: Tue Nov 02, 2010 11:41 am Post subject: |
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| jkruger wrote: | | Have you read the sticky thread titled "All About Lenses"? |
No actually, I didn't find it interesting with my old BG808s. I'll give it a try.
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opv
Joined: 18 May 2010
Posts: 202
Location: Emek Hefer,Israel
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| Posted: Tue Nov 02, 2010 12:05 pm Post subject: |
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| opv wrote: | | jkruger wrote: | | Have you read the sticky thread titled "All About Lenses"? |
No actually, I didn't find it interesting with my old BG808s. I'll give it a try. |
OK, I read it, nothing new for me, you guys summed up the information regarding the relevant lenses in this thread.
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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Tue Nov 02, 2010 12:49 pm Post subject: |
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There is so much scattered information there it is hard to glean the info we need. Glad you got what you wanted.
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opv
Joined: 18 May 2010
Posts: 202
Location: Emek Hefer,Israel
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| Posted: Tue Nov 02, 2010 7:26 pm Post subject: |
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Well, I tested the optical focus at my projection distance.
I managed to get focus, but I had to turn the dials up to the end. I don't think I get the best focus.
I'll mount it and afterward see weather I need HD10L lens.
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