> The exponential comes from Beer's law, which holds for simple homogeneous
> materials that don't absorb incredibly strongly (like water).

OMG... water is blue due to *beer's law*? LMAO!

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>>>> I wouldn't have thought assumed_gamma 1 would have *any* effect...
>>>> surely that just means that each colour component is raised to
>>>> the power of 1 before being output?
>>> Yeah that confused the hell out of me when I first encountered it.
>> Here's a random question: does LCD require gamma correction?
> 
> Yes, PC LCDs are designed specifically to match the response of CRTs.

Gah! >_<

Why don't they just make everything linear like it should be?

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>>> My main problem seems to be getting a decent sky. :-S
>>
>> Nope I disagree, if you have a realistic water material from this 
>> angle it would be almost completely transparent, the reflection would 
>> only show up on the top edge of the ripples (see attached picture).
> 
> Mmm, OK. In that case, my water is going to be completely black...

OMG! It actually works... I put some stuff *under* the water and made 
the water completely transparent to completely reflective with fresnel 
reflection, and suddenly it looks cool! o__O

That's amazing! Heh.

The sky is just plain blue, and it still looks good...

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"Orchid XP v3" <voi### [at] devnull> wrote in message 
news:452be6a1$1@news.povray.org...
>
> Why don't they just make everything linear like it should be?

Well the human eye isn't linear, so if you make a linear display device you 
end up with horrible colour banding even in 24-bit colour.

And I could make that answer a lot longer if I wanted to... don't tempt 
me... ;-)
-- 
Tek
http://evilsuperbrain.com

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