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Discussion Starter · #1 ·
Here are a couple of pics of my 235 scope lens and projector as promised in another thread.


The following dvd shots are using the full 800x600 dlp panel stretched to the proper ratio using the lens.

This gives me plenty of light output and enough pixel count for a bright smooth film like image.


Here is my Isco 35mm 235:1 lens. I paid $500.
http://www.avsforum.com/images/avs-lens1.jpg


This is the lens setting in the mount that came with the Isco 16x9 anamorphic lens. The projector is the Seleco HT200.

http://www.avsforum.com/images/avs-lens2.jpg


Here is the results. A couple of shots from the dvd Charlies Angels.

The image is 7 feet wide and is shot onto my light gray wall.

You cannot see any pixel structure from 6 feet away.

http://www.avsforum.com/images/avs-lens3.jpg

http://www.avsforum.com/images/avs-lens4.jpg



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Thanks Very Much!


Alan Gouger

AV Science
www.avscience.com




[This message has been edited by David Bott (edited 05-06-2001).]
 

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I don't seem to see the images.


Mark
 

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Will that lens fit into a JVC M2000?


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Ken Elliott
 

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Discussion Starter · #5 ·
Ken


The opening to the scope lens is on the small side.

It will work well with the M2000 if you chose the long throw lens option

but with the stock lens of 1.9 to 2.8 it will not.




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Thanks Very Much!


Alan Gouger

AV Science
www.avscience.com
 

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I asked and you provided...


..it looks sensational (as I have previously indicated I have found a few variable prism devices and I have a plan...)... I would like to see these in larger resolution shots but this will do for now...


...it appears there is some barrel distortion (esp visible in the Bill Murray shot) but a unconsidered benefit is lack of halo etc.. This had not occurred to me but would be a welcome side effect...


Really looking forward to some 'turret' construction pics...


Where did you pick that up for $500 ???


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HTPC without using windows... GUI Front Ends for Home Theater


[This message has been edited by Phat Phreddy (edited 05-06-2001).]
 

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Alan, I assume that it can't replace the lens with an adaptor. Is that true?


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Ken Elliott
 

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Discussion Starter · #8 ·
Ken


If I understand your question correctly the answer is no.

This lens works as a stand alone and must be placed in front of the projectors primary lens.


Phat


You can find these at 35mm theater supply houses. Make sure you

get one with a short throw.


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Thanks Very Much!


Alan Gouger

AV Science
www.avscience.com
 

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wow!! no words. yes, some words: http://www.avsforum.com/ubb/smile.gif


what did you as source: a Vigatec, a cinematrix, an htpc, to output a true 21:9 anamorphic ?


where on the net can these lenses be found , I mean, at those acceptable prices ?


thanks and congrats!!


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for cinema sound in your HT, use cinema speakers and cinema amps! unbeatable.
 

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Hi Alan


It looks great. But, do you have the pictures in a larger scale (if that's what you call it)?


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Lars
 

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Alan,


What are the specs (MM size, throw, etc) of your lens?


Also, in your research, have you found any 2.35:1 lenses with a big enough lens opening to work with the normal G15 zoom lens?


Like you, I can size the image fine for a 2:1, or 2.4:1 lens with my HTPC, but I'm more concerned with getting the corners of the image clipped off, barrel distortion, light loss, uneven-focus, and general quality.


-Dean.
 

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Dean,


Your concerns are very valid. I have a few 35 MM CinemaScope lenses and none of them work very well with my projector. The main problems are cutting off the corners of the image, and focus.


The lenses I have are for longer throw applications found in a commercial theater. Alan's lens was designed for shorter throw applications like the smaller stadium style theaters.


As Shawn Kelly has pointed out before, the aperture size of the lens needs to be large in order to account for the wide variety of projectors being used for home theater.
 

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Discussion Starter · #15 ·
As Joe pointed out the aperture on most projectors including the Dila will not work with a stock 35mm scope lens. The Seleco dlp with its long throw is one of the few that will.

I also bought a long throw replacement lens for my Dwin Transvision from isco. This is a direct replacement lens made for this projector and now I can use my scope lens with this projector as well!




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Thanks Very Much!


Alan Gouger

AV Science
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Hi Alan,


if money is no object, is there any scope lens out there by isco or other companies that has large enough diameter that we could use in front of our dila stock lens. if would great to know such lens exists so we could, at least, dream about it. thanks


seng
 

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wow , THIS is something to write home about http://www.avsforum.com/ubb/wink.gif


I am now for a few months buying all sorts of lenses, and already have a collection of them, mostly primaries with anamorphic atachments, and I think of taking the original lens out of the projector and completely replacing it.

You have your original lens intact? or did you replace it all?

Anyone else ever tried this with some other lenses? Schneider lenses are top and therefore quite expensive, and hard to get, I regulary check filmech and this did slip by, a great buy I must say, congratulations! http://www.avsforum.com/ubb/smile.gif
 
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