Which post are you referring to?
#1, 2 & 3 all seem to lack detail in the shadows but again I think it's more the speed of the lens more than anything else. For instance at f/1.4, for example, there would be 8 times as much light which would be the same difference as going from 60th of a second to 500th of a second. You would capture much more light at 60th of a second than you will at 500th allowing the capture of more detail in the shadows. Not a problem, the shots are excellent I was only referring to the capability of the setup.