I was worried about this to be one of the fuzzie ones, but after tests this turned out to be a good one.
DIY: I did know that the shift knob is too small, and covered it with a 8mm piece of rubber pipe (the the pic) (gasoline pipe 6EUR/1m, inner diameter 6mm) (my camera do not have a flash).
The main thing is that f/8 - f/11 is sharp, and f/3.5 is usable in many cases.