This is Part Of a bigger project. 1400 samples, post-processing in blender 2.73
3 days combined modeling, 3 Days combined Texturing
If the focal blur is post pro you might have forgotten to turn off ‘Preview’
Thanks For noticing that @organic, did that just now but for some reason i cant seem to see much difference: Though Ive attached both. Top is the 1 with preview unchecked
The blur is smoother in the new image. Compare the text on the lens for example.
Layer them in Gimp or Photoshop and switch between them to compare. There are also some artifacts on the zoom and focus rings.