I finally found some time and motivation to do a project I had long in mind.
The initial idea is to have the same scene with the same set of textures taken and optimize the shading and lighting for blender and for luxrender.
Doing this should help me to learn the workflow necessary to work painlessly with luxrender.
The style is targeted to be photorealistic, which should be obvious to achieve with luxrender and quite hard with blender internal renderer.
I start now this thread with the scene having already a basis for the the blender optimized setup. Depending on the feedback here I will further improve the shading/lighting while at the same time starting the luxrender part.
I will open a thread at the luxrender forum as well, where I hope to get good advise of how to setup the various materials, especially those settings, which have no corresponding implementation yet. ( e.g. SSS).
In the course of preparing this project, I recognized that this is also the perfect opportunity to implement a linear workflow, which is essential to get nearer to photorealism with BI.
If all goes well, I intend to write down my findings in a short tutorial/howto.
So, here is the first render
Blender internal/Compositor, no postpro
Render time: 43 sec ( AMD Phenom X4 2,3 Ghz, 8GB RAM, 64bit blender, Linux)