"Timothy Cook" <tim### [at] scifi-fantasycom> wrote in message
news:3B99A9F6.E0E5D4EC@scifi-fantasy.com...
> Ok, here's some things that've been bugging me about raytracing for a
while
> which might have simple work-arounds.
>
> 1.  Shadow fuzziness.  In the "real world", a shadow is nice and sharp
when
>     the object blocking the light is right next to the surface on which it
>     is casting the shadow, and blurred as altitude above surface
increases.
>     In POV, the shadow is nice and sharp the whole way if default settings
>     are used.  How to fix?

Try area lights

>
> 2.  Reflections in different type of materials.  With reflection, things
>     like highly-polished metal reflect ad infinitum.  Things like
lineoleum
>     reflect things close to them, but become less reflective as object
>     distance increases, with the exception of lighting.  This is not
>     quite simply blurring the entire reflection, more like the reflection
>     being 'foggy' (but not fading to a specific colour, instead fading to
>     'nothing').  I suppose I could achieve this (somewhat) by making two
>     renderings (one with fog, one without) and compositing them with the
>     desired surfaces from the foggy one overlaid on the other, but it
>     seems a hack.
>


Try Pov 3.5 fresnel reflection (read the docs for info on how it works) I've
been doing a lot of experimentation in this area lately.


-tgq

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