Originally posted by Spodeworld Looks so interesting, but wouldn't it be really hard to nail manual focus at such wide apertures?
Yes.
I have had grief trying to hit accurate focus at f 0.95. That is with the lens being perfectly collimated, the lens mount registration distance exact, and the RF matching horizontally and vertically at infinity and three feet. I can easily hit focus at f 1.2 on that lens and on my f 1.5 lens. That said, it is much easier at medium and long distance than at portrait distance.
But with digital you can get instant feedback and try again!