Paul C. Buff, Inc. Technical Forum

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Mon Aug 08, 2016 3:48 pm

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Joined: Tue Dec 08, 2009 10:43 am
Posts: 5266

Ok, so that is f/4.5 at ISO100. That seems really bright for an arena, but it may be lit for broadcast?

So, f/4.5 time the 65 feet is a guide number of 293. This can be achieved (roughly) with an 11 inch reflector and an Einstein at half power, but with a reduced area of coverage (30 feet or so).




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