I've got a project that requires a couple of things that I haven't figured
out a good way to do yet, so I figured I'd ask for ideas.

The first thing is, How do you do substances that reflect light based on
thickness, like milk or ice?  When thin, these substances are
semitransparent, but as they get thicker, they turn some color.  Absorbing
media only goes to black, so that's no good.  Can Scattering media do this? 
I hate to think of the render times, which is why I haven't worked with
scattering previously.  Is there some other way?

Second problem.  I need a single feather, one of those poofy kinds with lots
of fronds.  I can do the quill, but doing the fronds has left me blank.  I
can write a macro akin to the hair/grass/whatever macros, I suppose, but I'm
uncertain how to go about it.  Thoughts?

Geoff

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