Quick question; Just received a 135 f/2.8 Q, and the focus ring seems to be well on the stiff side. It's smooth and there's no grit at all, but it's slow going. Is this to be expected? I've never handled one of the non-Ai lenses like this before, so I have no frame of reference. It certainly eliminates the chance to alter focus when handling the camera though, which I kind of like.
Also, how does this one compare to the 135 f/2.8 Series E, Ai, and Ai-S? They're share a different optical formula, apparently.
Anyway, quick pic of the setup. Shot with the 100 Series E on the D500.
