On 01/23/2018 03:32 AM, Thomas de Groot wrote:
> Question: The Docs are silent about this, but do fade_distance and 
> fade_power have to be added to the light source or not, in order for the 
> media attenuation to work?
> 
> http://wiki.povray.org/content/Reference:Light_Source#Atmospheric_Attenuation 
> 
> 
By experimentation just now it looks like no. If you have a fade power / 
fade_distance it will of course affect media results apart from or in 
addition to any media_attenuation.

Aside: In running these recent tests I wanted the media on black so I 
could better see any attenuation in addition to noting the run time 
changes when media_attenuation is on. I forgot global media needs a 
terminating shape on which the ray stops & my media disappeared causing 
me a spot of confusion until I thought to put the background box back 
into the scene but colored black.

Bill P.

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