I have done many liquid tests with Indigo 0.9 using values from Jensen's paper and I can confirm that the values given in Jensen's paper are for the given volume V diltuted in 23-V litres of water. To get values for 100% concentration I multiplied the values by 23/V since that is the method described in the paper to extrapolate to higher concentrations. This seemed to give correct results for absorption and scattering. Gamma must be set to 1 for absorption, scattering, and Henyey-Greenstein.OnoSendai wrote:As far as I can tell, the coefficients given are actually for the media arrived at from mixing the given volume V with 23-V liters of water.

So the fractional concentration is V/23-V.

So to get the coefficients for the 100% concentration, you need to multiply by (23-V)/V.

However, there still seems to be a bug in version 0.9 with SSS because the milk materials would not render correctly (basically black, no scattering).

Using the same values and redering in version 0.8, the milk material seemed to render correctly. Ono, can you confirm that this is a bug? I was using RGB scattering values of approx. 18,000 for the milk material with gamma of 1.0.