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08/19/2009 at 09:09AM PDT, ID: 24665313 | Points: 500

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What formula is available to calculate projector lumens vs screen size

Asked by Galatica in Projectors, Math & Science

Tags: Calculating projector lumens

How can I determine the amount of projector lumens needed for specific screen sizes. Is there a formula and also how would I determine the light output with relation to f-stop on the lens used. need various lumen output needed for large screen presentations 20ft and above.

Thanks

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20090824-EE-VQP-74 - Hierarchy / EE_QW_3_20080625

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