I saw ripples (looked like ripples in a pond after a rock was thrown in) when watching a Sharp 9000 DLP on a Draper perforated screen. The ripples were definitely caused by pixel/perforation interaction.
However, Stewart's microperf screens may have smaller holes than the Draper.
To date we have not had any problems with moire artifacts and DLP projectors. We have had problems with certain LCD projectors. The majority
of the LCD moire problems have been with the native 16 by 9 LCD PJ's. The Sharp 9000 will be the first native 16 by 9 DLP that we will test with a perforated screen. I do not anticipate any DLP/ moire problems with the new 16 by 9 chip but, I will feel more lot comfortable after actual testing.
PS: As I am writing this thread the Sharp just arrived into my office, Stay tuned.
Don, based upon your previous two posts is it fair to say that I would not experience any moire artifacts with a Sim HT200DM or a Sharp 9000 on a 96" wide microperf screen? How do you test for moire artifacts? Are there a number of individuals who look for it?
With a 96 inch screen width you will not have any problem with the Sim 2 or the Sharp.
Testing for moire is a very simple visual test We project a full white field at different image sizes. (Pure white light will show the sins of any projection surface) The moire, similar to a zebra stripe pattern, is very easy to witness under such circumstances.
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