> Do your glass walls have 2 surfaces each? When dealing with refraction, a
> ray passes through a surface and with an ior and assumes itself to be
> 'inside' that material until it passes through another surface, therefore
> glass or transparent objects need to have an actual thickness to appear
> properly.   The refraction distortion on your glass appears as if this is
> the case.  Where it passes through the 2 sides of the glass (i.e., the
> bottom part of the bowl) it seems to be solid glass.
>
> -tgq

Hi,
My object is a surface of revolution made of 'mesh2'. I also think that the
problem is in the refraction distortion, but I don't know what is the
correct ior for my object. The value 1.55 is the real value for glass, but
the result in my image is bad. Other values for ior has worse results. I
tried with the parameter 'double_illuminate', but the result is the same.

I also tried with T_Glass2, but no improvements get.

Thanks,

JSR.

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