John (or someone) would you mind confirming something for me? I am going to need to be moving my JVC DLA-X35 into a new, shorter room. I'm planning ahead for getting the CineVista and think I've got my head around what the lens, coupled with the internal projector scaling is doing.
If I understand correctly, as a horizontal expansion anamorphic lens the CineVista is correcting the image that the projector is making when its anamorphic mode is invoked (i.e. the scaling correction carried out in the projector forces the image to make use of the full 1920 x 1080 pixels from the panel but because this is not the original signal AR the image looks thin and stretched). The correction applied by the lens is an optical magnification, working only in the horizontal direction.
This would mean that the "tall skinny" 1920 x 1080 image coming out of the projector lens before it hits the anamorphic lens is horizontally expanded to an effective resolution of 2538 x 1080 pixels (even if no new pixels are created). So the width of the projected image on the screen is 1.32 times wider than it would have been without the anamorphic lens.
I think that's all correct. Now here's my question:
I've got a fairly short throw in the new room - just about 10.5 feet. The wall area I am going to be projecting on is quite wide at about 12 feet.
When I go to the elite projector calculator
and plug in my RS45 (the equivalent model to the DLA-X35) it tells me that at maximum zoom with a throw of 10.5 feet I will be projecting an image that is 92" wide (and 39" high for a 2.35 screen). So....if I have the CineVista in front of my DLA-X35 I am assuming that the actual projected width at maximum zoom for a throw of 10.5 feet would be 1.32 x 92" = 121.4 inches, and that this would require a screen height of 51.7" to be a 2.35 AR screen. Is that correct?
Second part of the question - if I am correct above, then given that I could probably then bring down the zoom a bit and still have a respectable width projected image (our seating will be 11.5 feet away), do you have a recommendation for a better zoom factor? I've noticed you've mentioned previously that the sweet spot throw distance for the CineVista is a little longer than what I have in my set up so that's a concern.
Last comment is to confirm this is in a fully light controlled home theater.
Thanks and best wishes,