Jeff Fillmore
Member
Kind of bored this afternoon and playing around. We made our own "Mickey Bokeh." 


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"Tim" said:i know it's multiple layers...
"Roger" said:Physics, Tim. It's easier to think of it with digital sensors, but it was the same principle with film.
It's like adding another set of aperture blades in front of the lens, and the light has to travel through it for each and every film grain (photo site). So for each highlight you would get this effect.