"Once the light hit's a surface that's it! That surface is what it is, and will have exactly the same effect it would have if were already that intensity. That's one of the reasons I'm playing dirty, in order to compensate for the excessive bias of TA." Only problem with this is that you eliminate the possibility to have completely dark area's in your image. I think the solution of eliminating excessive bias of TA lies in adjusting the balance of your textures, though this might not mean a universal balance that would be the same for every texture in the scene. "Rayraz, that's impressive thinking. What you're getting at all boils down to luminance. Based upon luminance, I could make PR as near perfect as possible no problem. But it's too complicated a method to expect an artist to manage all that would be involved, manually. If Bryce had scripting ability, luminance-based logic would indeed be the way to go." hmmm... I'm wondering, did you ever use any software capable of rendering with GI, Radiosity, AO or Final Gathering? You might be looking for a universal solution to managing realistic lighting in your 3d scenes, but even the pro's at large production studio's experiment with the material and lighting settings in order to get the right look they're after rather then sticking to a universal solution. Still, PRO-RENDER could be a nice step for people into the realm of TA, especially if it explains well how things work and why PRO-RENDER uses certain techniques/settings. Especially in combination with the pros and cons connected to these choises. I wouldn't say PR ain't worth a thing, unlike others here, I think it could be a good documentation on TA and it's workins if PR is worked out as such. However a universal "true render solution" it is not. But maybe you're not claiming it to be a universal true solution? If people buy books, dvd's, e-books, tutorials about 3d software and renderers and techniques of using them, then I don't see why PR should not be sold really...

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