Used Blender 2.70
Render time about an hour with 1600 Passes
Post production in Paintshop Pro X4
All decals were re-created in Inkscape
Used the aluminium shader from … elbrujodelatribu http://www.blendswap.com/blends/view/69793
and modified it for my purposes.
very nice detail. The only thing missing is color on the glass, usually lenses have all kinds of colored reflections and whatnot, I am not sure if this is from coatings or dispersion or what. Otherwise totally “photo” real lolz
Thanks lol 
hmmm I will do some research on that thanks for the tip.