I should point out that I keep reading your "fall-off" to be the keyword
'falloff' in the 'light_source'.  You of course might also be talking about the
edges of the spotlight cones.  Same thing anyway, 'ratio' is intended to change
how the lit and unlit media is sampled.  As the help file states, it is biased
toward lit media so I'm guessing lower than 0.9 will move toward a unlit bias.
And if a ratio of 0 to 1 is the intended range then 0.5 should be an equality.

Bob

"Bob Hughes" <omn### [at] hotmailcom?subject=PoV-News:> wrote in message
news:38bd9ebc@news.povray.org...
| It could be that the 'samples' and/or 'intervals' need to be increased.  When
| the intensity is lower the granularity might be showing up more and that's
what
| you are seeing then.  If the media is smooth everywhere but certain places,
like
| shadow edges, then almost certainly it's those parameters which need to be
| raised.  It doesn't have anything to do with the lights themselves, except the
| more you have then the more sorting out that has to be done, but that's
nothing
| to do with 'falloff' values.
| All I knew before was that 'ratio' in the media is meant to make changes to
the
| light edges, if it does indeed affect the falling off of light too then I
never
| knew that before.  And if so it might need to be set lower (default is 0.9).
It
| does say in the help that it's lit to unlit ratio.  I just got it into my mind
| that meant edge of the light cone (or cylinder).
|
| Bob
|
| "Hartmut Wagener" <har### [at] arcormailde> wrote in message
| news:38bd98f1$1@news.povray.org...
| | Thanks, that saves lot of compution time ... And of course most of the
| | parameters can be understood. Anything about falloff-spotlights? It took
| | long for me to see that the falloff was disturbing the light-cones. Perhaps
| | triying a little bit with tightness will bring an answer ...
| |
| | Hartmut
| |
| | Bob Hughes schrieb in Nachricht <38bc6f4d@news.povray.org>...
| |
| | >I don't think confidence, variance, ratio really ever need to be used
| | anyway
| | >(unless you want messy results on purpose).  The other keywords are
| | >understandable I would think.
| | >
| | >Bob
| |
| |
| |
| |
|
|

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