I chose to use V-Ray for the materials, lights and rendering. I feel very comfortable using it as I find it's very flexible and powerful. First, to assign materials and textures, I unwrapped all the pieces and painted them to create a black and white mask that could simulate the wear of the materials (Fig.10).
For the materials of the metallic parts, I used a V-Ray material with a blend of various metal textures. For the chassis, I used a V-Ray material with a leather texture to simulate the surface of the original Canon Super 8 (Fig.11 - 13).