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Discussion Starter · #1 ·
I just bought a second hand Isco IIIL and have taken a few hours gathering all the pertinent info I could find in this forum.

Although, I have been unable to find any official documentation from Isco (or Schneider) online.

Either the links are broken, the websites are down or the files are missing...:(

This is a call for help. Could someone post such files here?

Instructions manuals, PDF files, specs, anything will help!
 

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Scott Horton, techht.com
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You’re welcome. There’s room for improvement but it’s better than nothing. Isco never made any instructions of any kind. Looked to me to do it when we partnered.
 

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Discussion Starter · #6 · (Edited)
You’re welcome. There’s room for improvement but it’s better than nothing. Isco never made any instructions of any kind. Looked to me to do it when we partnered.
Hi. I finally received my lens. It truly is a work of art!

I dit a quick test, holding the lens in front my my projector. My screen height is 53 inches. The projector is throwing a 96 x 53 inches picture (16.9).

Since the lens is a 1,33x horizontal expansion lens, I shoud get a 127.7 by 53 inches picture, right?

Strangely, the picture I get with the lens is 122 x 53 inches...?

going from 96 to 122 inches is 1.27x? Not the 1.33x expected...

There is more than 5 inches missing in picture width, yielding two obvious vertical black bars. What is going on?
 

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Scott Horton, techht.com
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Hi. I finally received my lens. It truly is a work of art!

I dit a quick test, holding the lens in front my my projector. My screen height is 53 inches. The projector is throwing a 96 x 53 inches picture (16.9).

Since the lens is a 1,33x horizontal expansion lens, I shoud get a 127.7 by 53 inches picture, right?

Strangely, the picture I get with the lens is 122 x 53 inches...?

going from 96 to 122 inches is 1.27x? Not the 1.33x expected...

There is more than 5 inches missing in picture width, yielding two obvious vertical black bars. What is going on?
Focus
 

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Discussion Starter · #8 ·
Thank you, not I have got it. The lens is in place, your instructions were very helpful, just a bit of finetuning now.

By the way, is it normal that the focus ring has to rotate a lot for the focus to visually change on the screen? I find it hard to determine its best position, there seems to be at least a 180 degrees angle for which I cannot tell the best focus?
 

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Anyone knows if there are still ISCO IIIL ceiling mount or projector attachment for sale? I searched all over the internet only to find some pictures and actually start thinking about building one on my own if they are all gone.
 

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Anyone knows if there are still ISCO IIIL ceiling mount or projector attachment for sale? I searched all over the internet only to find some pictures and actually start thinking about building one on my own if they are all gone.
Trust me, unless you are willing to pay for the CineSlide, finding an actual ISCO mount is nearly impossible. You can find old Runco and Panamorph a-lens mounts and sliders on ebay on rare occasions. Create an email alert for them and you might get lucky. I was able to find two for less than a few hundred each. I still had to build my own slider mount to hang on the ceiling out of MDF and 1.5" pipes. Also, the Runco mount plates are worthless for any other projectors unless you are good at machine drilling new holes. Their plates are thick and need a real good drill bit to get through them...I destroyed two good (expensive) drill bits trying to drill out new holes for my JVC RS3000.
 

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Discussion Starter · #11 · (Edited)
I have finished my lens install. I am very happy with the results. Resolution is clearly better. No more light spill above and below the screen. I have calculated a 22% gain in brightness vs zooming.

The lens I bought came with a Runco lens mount and slider. I had to fiddle with it a bit to have the slide mounted on the ceiling (It was designed to be mounted directly to a Runco projector).

I will post some pictures when I get back home.
 

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I have finished my lens install. I am very happy with the results. Resolution is clearly better. No more light spill above and below the screen. I have calculated a 22% gain in brightness vs zooming.

The lens I bought came with a Runco lens mount and slider. I had to fiddle with it a bit to have the slide mounted on the ceiling (It was designed to be mounted directly to a Runco projector).

I will post some pictures when I get back home.
I mounted my Runco slider to the bottom of my hushbox. I tried to mount it on the ceiling but the distance was too great and I needed some sort of hanging mount and there was was way too much wiggle when the lens moved side-to-side. I tried so many different ways. I wish I could have done that as it would have been so much easier.
 

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I make custom mounts. I can retrofit old Runco stuff to new mounts as well. Not cheap to do one-off stuff, but we do it all the time.
If I can get my hands on a ISCO DLP Cinema (1.25x) I will definitely give you a call for custom mount since those were a lot harder to find any parts for a mount.

I missed getting the last one on ebay since it was about $250 above my budget but now that the home theater is finished I can splurge a bit more if another one shows up.
 

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Here are the pics. Very stable and very precise lens movement.
Damn, that looks real sharp. Never would have thought about putting wood blocks on top of the slider platform to give a little more height/drop. Great idea.

I totally forgot to take a picture after I got the lens installed and before I closed up my hush box but I will next time I have to open it.
 

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I make custom mounts. I can retrofit old Runco stuff to new mounts as well. Not cheap to do one-off stuff, but we do it all the time.
Twelve years ago, I was ready to begin my HT update (originally built in the 1990s, with a Sony 5200 CRT and Faraudja "line doubler"). By the time I had gathered a new projector (Epson 6010), ISCO III lens, your CineSlide, Carada 136" 2.355:1 screen with Masquerade horizontal masking and Pullman automated seating, my life took a sudden turn due to family matters. I had other things to take care of and all this equipment sat unopened until now.

Today I find myself with more time in my hands and looking forward to restarting my HT plans. I bought an OPPO 205 the day I saw their "Farewell" announcement. It, plus an NVIDIA Shield box are my only recent AV purchases. I suppose I'll eventually upgrade to a 4K projector, but I plan to get some use out of the EPSON (hopefully, its anamorphic stretch feature will work in 3D - the manual doesn't mention otherwise).

Depending on how everything lines up, I may need to look into mounts for the CineSlide. But for now, I have a huge lot of re-learning ahead of me!
 

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I just bought a second hand Isco IIIL and have taken a few hours gathering all the pertinent info I could find in this forum.

Although, I have been unable to find any official documentation from Isco (or Schneider) online.

Either the links are broken, the websites are down or the files are missing...:(

This is a call for help. Could someone post such files here?

Instructions manuals, PDF files, specs, anything will help!
These threads may be of interest:
https://www.avsforum.com/forum/117-...at/929163-isco3-setup-focus.html#post12039831

https://www.avsforum.com/forum/117-...at/929163-isco3-setup-focus.html#post12039831
 

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By the way, is it normal that the focus ring has to rotate a lot for the focus to visually change on the screen? I find it hard to determine its best position, there seems to be at least a 180 degrees angle for which I cannot tell the best focus?

There is only one way to accurately adjust the anamorphic lens' focus (actually it's correcting for astigmatism).


Put up a crosshatch pattern that uses white single pixel width lines. While adjusting the projector focus, check to make sure that the vertical and horizontal lines come into perfect focus simultaneously. If they don't, rotate the anamorphic lens adjustment ring in either direction. Readjust the projector focus. Rinse and repeat...


When both vertical and horizontal lines come into perfect focus at the same time, you have found the perfect focus (astigmatism) adjustment for your anamorphic lens.


Enjoy..


Vern
 
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