Hello!
Should it work fine, the viz4 radiosity solution → render by Vray (fast raytrace, soft reflections etc.)?
I had a quick try but didn´t success so far.
-Tomas
It doesnt work at all
Gonçalo
Considering certain benefits if it was working, I would like to pass a question to the great Vray developer team - if it was easily enabled, the viz4 radiosity solution to become visible under the Vray engine. That would in my opinion only strengthen the Vrays superior position in the rendering engine world. Did I say that nicely enough 
-Tomas
how many rendering systems are there out there that give the use of other rendering engines solutions. I cant see cebas making a vray irradiance map support.
That´s true. I just didn´t think it that way. From the point of developing things I wouldn´t accept the other programs don´t do it reason. maybe it´s not generally a good idea to lean to other softwares, I admit, but this would be a situation where the plugin (Vary) “supports” the software (Viz).
Why to suggest this? Because it would enable a fast and pretty simple way to make long animations with pre-calculated lightning (that is somehow based to realistic values). Add to that the superior Vray raytracing etc. and you may have very fast (high quality ointerior) animation workflow.
Of course I would finally like to see everything happen within Vray - the photometric lightning, complete radiosity solution and bake all this to textures button. But meanwhile, just curious to know if the reason for viz4 radiosity not showing in Vray was known. If I remember correct I was once able to render imported Lightscape solution in Vray.
-Tomas
If only vray could use VIZ4 precalculated luminance/illuminance information for the first bounce calculation. That will surely kill all other render apps. Radiosity + GI. Imagine rough radiosity light energy distribution + accurate GI calculations based on it! + it could use VIZ native exposure controls instead of light/dark multipliers.
Please, think about it, chaotic gods!
-d
ive tried using vray with max 5 radiosity, but it wont play at all… HOWEVER, vray works fine with lightscape lighting solutions, (which although ancient, is still streets ahead of max 5 / viz radiosity anyway)
you can even use vray displace on a lightscape mesh (although obviously your shadowing wont be correct) depth of field, raytracing, motion blur… all work fine … hope that helps 
Nice to know that
actually finalrender stage1 supports max/viz radiosity solutions and exposure control. not that i think radiosity is too important, but a good integration is always nice.