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Old 20th May 2004, 02:28 PM   #111
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It is hard to tell from looking at the lens but from the quality of your pictures I would say that it probably is.

Hezz
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Old 21st May 2004, 04:52 AM   #112
echow87 is offline echow87  
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hertz...that pic of ur pj > the fresnel looks like its not flat. did you sandwich the fresnel?
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Old 21st May 2004, 07:33 AM   #113
Altec is offline Altec  
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Quote:
Originally posted by [RPD]-Killer
In my opinion, a IR-filter is as important as a UV-filter. The IR-filter filters () most the heat out of the light beam and reflects it to the light engine.

Lightbox is getting hotter -> display keeps cool
Actually thats a cold mirror by definition. Passes IR light>reflects clean cool light..... A "type" of dichrotic mirror. A IR filter transmits the light and absorbs the heat. Not so great for light engines really. As it isnt as transmisive as a cold mirror is reflective hence less efficient. Also cold mirro removes more heat much less passing more light. Cold mirros are much more efficient and more commenly used in areas where heat is a concern.

__________________
Optics are a science......
Projection a ART!
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Old 21st May 2004, 04:33 PM   #114
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Thank u guys for the input. I appreciate it alot.

Yes my fresnel is warped because I don't use glasses to support my fresnel and protect my lcd.. A lot of guys may not like it because they may notice uneveness in image focus. But really I dont mind it because really it doesn't bother me as long as i have better color brightness and sharpness and acceptable lcd temp.

Aargh!!! by the way i replace my reflector with a better one because my reflector turned yellowish because of heat. Now i notice a considerable increase in brightness but i believe I lost considerable color vividness also. Can't show u some pics right now bec camera was barrowed yesterday.

Initially I thought that increase in brightness is the culprit in loss in color vividness but i need to consider one more variable. Right I am using a stainless soup ladle reflector, but before I really don't know the material. All I know is that it is much softer than stainless steel. I can puncture a hole using a nail and hammer in my previous reflector but I cannot puncture the stainless steel reflector. Can somebody tell me what possible material is it? Will aluminumm yellow under intense heat?

I review my comparison of dlp530 and my pj. Dlp 530 is sharper and brighter but take a look at color differences.

A lot of guys maybe right that brightness is not all that matters. Color must be well considered also atleast I can say it for my DIY projector.

DLP530
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Old 21st May 2004, 04:35 PM   #115
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MY PJ!
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Old 21st May 2004, 04:38 PM   #116
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dlp530
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Old 21st May 2004, 04:41 PM   #117
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probably i will revert to old reflector but will have to watch more movies for awhile. Will put on hold upgrade to 400w for the meantime.
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Old 22nd May 2004, 06:12 AM   #118
wylie-c is offline wylie-c  
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Aluminum it most probably is! BTW, very nice results, looks great!
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Old 27th May 2004, 08:35 AM   #119
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My cabinet! Backside not finished yet. Need to bore some holes.

Looks better than my Tannoy Mercury 3 speaker!lol!
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Old 27th May 2004, 05:04 PM   #120
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Here is Private Jack Games. Nice bright image!
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