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Many projection screens do not provide the angular reflective gain that they claim. This is especially true if you are using a ceiling mounted projector. To see how much gain above or below unity you are getting take a piece of printer paper and either have someone hold it in front of the screen or… Read more
Monitoring projector light output is a common thing to want to do. This can help you to determine when your lamp should be replaced and what your actual light output from your projector is. The first thing you will need is a light meter. I recommend the Extech 403125(discontinued) or the AEMC CA813 if you… Read more
I recently had the opportunity to compare a UH480 and a DC1 Panamorph anamorphic lens. The light loss measured with my PR-670 for the UH480 was 1.7% while the DC1 was 0.6%. This alone does not seem like a good reason to purchase a DC1 over the UH480.
Many front projectors today use an iris to make dark scenes darker. Products that may use this are DLP, LCD, and SXRD based light engines. These irises will be open on a bright scene and close as the scene darkens. The reasons these products have included this feature are two fold. One is as a… Read more
I have added Stewart Silver 5D and Da-Lite Pearlescent screen materials to my screen test report. Silver 5D is a new material designed for passive 3D.
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