[clackers]

So I'm playing with Voigtlander Nokton 58mm now, and it turns out this is not too bad as the camera is beeping when focus is achieved, which looks at the right time in focusing. However I have two reservations:

-- it asks to enter the focusing distance, and the nearest value is 55mm. K-3II seems to only offer a menu there, so I can't enter 58mm.

Remember this data isn't used for focus, if you're worried, Braver. It decides how much shake reduction should be applied - longer focal length, more needed, etc. I'm sure using 55mm will be fine.

-- the focusing and beeping seems incessant when the focus mode switch is in AF position. E.g. if the last focus was on infinity, everything at infinity seems to cause the focus confirmation blink and beep. Turning the switch to MF seems to stop this. Probably the effect of AF-A, so AF tries to confirm focus continuously? Is there any recommendation on keeping focus mode AF or MF for confirmaion?

I normally leave it on AF-S unless I know I'm capturing moving subjects.