Am 08.01.2014 17:00, schrieb LanuHum:

> There are no caustics reflection and refraction.

Use photons.

> Photons and radiosity are compatible?

Yes.

Make sure though that all the windows are using "photons{pass_through}", 
and that all surfaces you want to generate caustics are using 
"photons{target on reflection on refraction on}".

In the global settings photons block, you'll also need to set 
adc_bailout to a very low value. I'm currently using 1/100000 (1e-5).


> How to improve contrast?

The original colors were probably intended to be in sRGB space, so try 
replacing all "rgb" with "srgb" (and also all "rgbf" with "srgbf", 
"rgbt" with "srgbt", and "rgbft" with "srgbft").

This will reduce the brightness of many materials, thereby reducing the 
effect of radiosity. As a consequence, areas in shadow will experience 
not only an absolute reduction in brightness, but more importantly also 
a reduction in brightness relative to areas in bright light. (As areas 
in bright light will also get a bit darker, you may want to increase the 
light source's brightness to compensate.)

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