First i did some test renderings to see how HDR works in mental ray.

Bastian is the son of my girlffriend´s sister. He was about to get a e-guitar and an amplifier as a present. My part was to design a symbolic presentcard. I used the REACTOR© engine with the cloth-modifier to create the cable between the amp and the guitar. I used image based lighting to get a good shading.

Amazing oO  GI Photons generate a shadow behind a raytrace plane. This is more training and testcase stuff.the-final_ringtone