[dimitris2u]

I have just noticed that the right side of the screen is out of focus.

I did a test with an Isco 3 lens and a Marantz 11S1 projector. The astigmatism correction of the lens doesn't improve things. The best is where it is now. Throw is 2.0 at the moment.


Why is this happening?

 

[Vern Dias]

Try it without the Isco anamorphic, first. Observe the right side of the image very carefully. If you see focus problems without the lens, it's a projector problem.


The projector does need to be exactly on the centerline of the screen. No horizontal lens shift, if the projector has it. If you don't see the problem with the just the projector, try reinstalling the Isco but with it rotated 180 degrees and see if now the the left side is out of focus.


I have never seen nor heard of an Isco anamorphic with this issue, although I suppose it could have been dropped or otherwise mishandled in shipment.


Vern

 

[Art Sonneborn]

Is it out of focus with the lens out ?


Art

 

[dimitris2u]

The projector shows the internal pattern as green. It should be white, that's why I am having problems with the focus.

Dan from Marantz has mentioned this in the past, something I've just remembered now