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incova
Joined: 27 Nov 2006
Posts: 789
Location: london
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| Posted: Thu Dec 08, 2011 12:54 am Post subject: Drilling into a Ampro 4600 LC Chamber to mount lens? |
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Getting the top or bottom of the picture totally perfect is very difficult with a Ampro due to the way the lens are mounted on plates, I was wondering if you could drill directly into the LC chambers and mount the lenses directly to the chambers? I imagine the answer is probably no as this would mean the chambers would leak or you would be drilling to close or into the glycol chamber? I dont ever remember reading a thread on this but then my memory sucks...............
Just wondering out loud.
I am guessing Chip and others already thought better of this and just replaced the LC chamber with another brand?
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Thu Dec 08, 2011 1:29 am Post subject: |
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Don't do it.
The combination of lower projection angle and widescreen image reduces the bad focus effect. If you were to shoot a zero projection angle you would have no corner focus issues.
I did design a set of top and bottom plates to squeeze in a set of Marquee optics but never got around to doing it. I no longer have the desire to play mod boy with CRT projectors. I just don't have the time for it.
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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incova
Joined: 27 Nov 2006
Posts: 789
Location: london
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| Posted: Thu Dec 08, 2011 1:33 am Post subject: K |
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Thanks Chip, for some reason I thought you had done it, as you say with widescreen material you will never see the issue, I was curious to see if someone had done it.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Thu Dec 08, 2011 5:53 pm Post subject: |
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You running 4:3 over there?
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CRT.
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incova
Joined: 27 Nov 2006
Posts: 789
Location: london
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| Posted: Thu Dec 08, 2011 7:36 pm Post subject: hey |
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Yup, got a few movies which are 4.3, I have the PJ pretty low down of the ceiling, well as low as I could get it so the problem has not been too bad but I had issues which I wanted to resolve.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Fri Dec 09, 2011 5:30 am Post subject: |
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4:3, Cool!
Issues? With an Ampro? hehe
I had mine on last night. It's developed a tic. It overheats with the case on. Good thing it's winter. I'll have to pipe some cold air in to chill it.
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HD done right!
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Fri Dec 09, 2011 5:30 am Post subject: |
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4:3, Cool!
Issues? With an Ampro? hehe
I had mine on last night. It's developed a tic. It overheats with the case on. Good thing it's winter. I'll have to pipe some cold air in to chill it.
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Tech support for nothing
CRT.
HD done right!
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