On 3/23/2011 3:01 PM, clipka wrote:
> Am 23.03.2011 22:28, schrieb stbenge:
>
>> I don't know if it's an accurate way to do it though, I just knew I
>> should make a transform based on the ior of both water and air, and a
>> reciprocal seemed like the best way to do that.
>
> Yup, that's the way to do it. For all optic phenomena I know of, the
> absolute IOR of participating media is irrelevant - everything is in the
> /ratio/ between the respective refractive indices.
>
> (An alternative would have been to model the water using a scene-wide
> interior, i.e. using an interior{} block outside any objects.)

Ah, that sounds like the best solution. That's the way I'll most likely 
do it next time. Thanks!

Sam

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