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Author
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Topic: Crooked and masking issues in D-Cinema???
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Steve Guttag
We forgot the crackers Gromit!!!
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Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 12-10-2008 06:05 PM
The WCL is a fixed 1.26 magnifier (spherical). Being that it is mounted on a motorized arm, it can be programmed in as a channel so that when one selects "scope" in it comes. It has nothing to do with 3D. Its job is just to magnify everything.
Despite the claims of others, it is not as light efficient as an anamorphic lens or anywhere near it. If you have side only masking, an anamorphic is going to get you a more light efficient system. What the WCL brings to the table is a MUCH lower cost lens that is not going to screw around with the pixels in either the projector or the screen...no "scaling" is necessary with it.
It does require a little bit of a set up and Mark is right, with enough effort, you can get a very good Flat and Scope image, even with lens shift. Whom ever said you can't lens shift with the WCL is just plain wrong.
What lets you get away with it more is that Scope images only fill the imager in width and Flat images only fill the imager in height.
As such, you have wiggle room to move the image on the imager to get both Flat and Scope centered on screen and lens shift as well.
As for "perfect pictures" I guess some advertise them...the realities are that digital must obey the laws of physics too and when one is not dead center with custom lenses...there will be compromises. Digital should have every bit as much of a chance of delivering a low-keystone image as film. Like with film though, the installer can make all of the difference between just having a picture and having a great picture. And if the wrong prime lens (focal length) is being used, that isn't the fault of the process anymore than it would be if one had the wrong lens for film (and I've seen that happen too).
Steve
I've done it on a CP2000-ZX with pretty decent results.
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