Re: Foam Core // As Diffusion

You mean the stuff that arrived wrapped around my new washing machine? Yep I use it around my studio all the time - more often as a reflector

Sometimes wrap my kino or small led lights

Overall clearly it is a fire hazard with hot lights - I think it is slight tinted and does eat a lot of light

Personally I'd use diff gel for diffusion
 
If he means plain old foamcore like we typically use for bounce, I have noticed light DOES pass through it. . .just very little of that light. Like you would need a tremendous amount of "input" to get the needed "output". Then again you read about DPs in American Cinematographer articles using 18K lights for this and that, so maybe somewhere it's feasible.
 
I dont think he means foam core just thin 'foam'

foam core is two rigid sheets of plastic with a foam core to create a low mass board

foamcore is something we use.. in black.. for negative fill in our studio
 
You're talkin the 1/4" or so thick glossy stuff, right? I call that foamcore. . .maybe that's not technically right. The 1" thick matte stuff, we call beadboard.
 
Assume the OP is not a complete fool - probably not wanting to use something an inch thick.

Thin 5mm white 'foam' is a pretty handy light modifier if you are not using hot lights

S
 
I like the 1/4" paper surfaced foam core for reflectors. Large 4'x 8' sheets of it. It is slightly warm, not neutral, but hey you can paint it too. Cut it, bend it, tape it, clamp it.
Silver and gold metallic paint is fun to play with for color FX. You can use titanium dioxide white paint if you want something close to neutral and highly reflective. If you can find a local wholesale sign supply company that sells it rather than retailers like Hobby Lobby, a 4'x8' sheet can be less than five bucks.
 
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