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I think pretty much any flash photography (disposable camera or pro set up) is going to have the ghosting on it.
Also, I don't think that distance is going to matter much. That is the thing about retro-reflective surfaces. Think about how easy it is to make a stop sign glow. Same thing here I think.
As to video crews, I think if they use a light source they will have problems. Not all use an additional light source if they do, I think it will show the ghosts.
Anybody able to confirm or refute these claims?
Joe J.
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