Hello,

i have been wondering whether the recent 3.5 version of POVray
features a different attenuation formula in comparison to 3.1a
(that's the version i have) ...
Well, actually, the formula in 3.1a is not bad, as it approximates
reality quite well, but it is not 100% correct ... it should be an
exponential decay - something like Inew = Iold * (e ** (- k * d)),
with e = 2.718.., ** = power, k = constant determining the strength
of attenuation, d = distance the ray had to take through the medium -
instead, shouldn't it?


Regards,

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