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Re: Reflector or foam core board?

Cow Forums : Lighting Design Pros
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Re: Reflector or foam core board?
by Rick Wise on Jun 30, 2008 at 11:33:28 pm

The B&H reflector will almost certainly be a bit harder than foamcore. The softest "hard" surface is bead-board, which is styrofoam. Next harder is white card. Harder yet is Foamcore.

A trick grips use to focus a board is to place a small mirror near the center of the surface, then tilt the board until the mirror reflects hard light where you want the maximum amount of bounce.

Equally, if the there is too much fill from the bounce you can reduce it several ways: move the board further away; tilt the board off its maximum bounce, or "waste" it; scrim the light falling on the board.

Remember that light intensity changes by the square of the distance. Double the distance of a light (or bounce card) you cut the light to a 1/4 of its previous intensity. Cut the distance in 1/2 and you increase the light by 4 (2 stops). In other words, moving the light a little closer, or a little farther away, makes a big difference in intensity.

Rick Wise
director of photography
Oakland, CA
www.RickWiseDP.com
email: Rick@RickWiseDP.com


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