Among other things, Jaime Vives Piqueres saw fit to write:

> Almost finished now, with additional parameters for the intensity
> distribution, number of diaphragm blades, and even passing an object for
> the bokeh shape (as with real black paperboard cuts).
> 
> The method is tricky but clean, and is somewhat fast to render... but I
> still have to try to automate it (so that you can queue the consecutive
> passes).

Looks great! I wonder... how does it handle reflections? Actually, how is
bokeh affected by reflection in real cameras? (I mean, when the bright
spots are not seen directly, but through a reflection.) The same could be
asked with refraction or just transparency.

-- 
light_source{9+9*x,1}camera{orthographic look_at(1-y)/4angle 30location
9/4-z*4}light_source{-9*z,1}union{box{.9-z.1+x clipped_by{plane{2+y-4*x
0}}}box{z-y-.1.1+z}box{-.1.1+x}box{.1z-.1}pigment{rgb<.8.2,1>}}//Jellby

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