Originally posted by ffking The macro lens, which is the main use for this, is still screw drive, isn't it? I'm guessing it might require an SDM or similar lens to get the fine control needed - something for the future perhaps?
I don't think so. Yes, the 100mm Macro WR is screwdrive but imho it's not a dealbreaker. Using the K-1 and IT2 on my Mac, I can control focus by software very precisely forward and backwards in tiny little steps. Usually I tap " focus forward" X times and take the next frame. That repetition can easily done by an app. For example make 5 frames and move focus 15 steps forward in between these frames.
I can imagine that an SDM or ring type motor could be better in the sense that you set the front focus and the back focus and let the camera do the rest. But Idk if that is possible with that hardware.
Maybe that S button on top stands for "Stack"? /jk