"Jim Charter" <jrc### [at] msncom> schreef in bericht 
news:48aa397f$1@news.povray.org...
> The sun value is determined by LightSys.  But its *apparent* brightness 
> has a lot to do with the sharpness of the shadows.  With no area light to 
> area light with a spread of 1% the distance, the shadows look sharp and 
> deep and the sun bright.  In this image the spread of the area light is 
> 2.5% of the distance to the light.  At 10% the distance this image looks 
> quite dull like it is a cloudy day.

In Lightsys, you can play with the luminosity by:
#declare SunLuminosity = 3;
used in the Light_Color(SunColor, SunLuminosity) macro you can use as light 
source color.

I am not sure, but possibly you can also influence the luminosity  by:
#declare Intensity_Mult = 0.80;    // default [.75]
before including CIE_Skylight.

Thomas

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