On the CV15 i have it on the A7rII.... focus is smooth it just does not appear to play well with focus peaking. I will have more time to play with it tomorrow and determine further.
I don't intend on focussing mine at all. I'm going to work out where I need to set my focus ring when set to f/5.6 for front to back focus and leave it there. That's what I done when I had the rokinon 14. The dof is so big on uwa you can basically set it once and go.
I don't trust focus peaking for anything. It always shows peaking then you magnify and its not focussed. Same thing when I had the a7r and a7ii. I don't know why so many people say peaking makes it easy





















