I tried a mirrorless. Have you?

MarBa wrote:

Nikon was able to do this! I see no reason why this would not be possible.

Of course, Nikon could do it. Pentax can also do it. May point was mainly that I cannot do it. Because the protocol provided do not contain enough information and manipulation of the camera.

NOTE though - that it is not easy for Nikon/Pentax. The limitations and problems I mentioned do exist. And I assume that not everything works well with the Nikon solution.

Another thought. Nikon has a MUCH better AF than Pentax. K3-III is the first Pentax camera that comes even close. This neeeds to be taken inteo account. Making it automatic is much easier if the AF is good and reliable.

They managed to get astrotracer without GPS...

That was nice. I never liked the GPS based one. Mainly because it needed a compass, and that is not a reliable tool.

Calibration of lenses seem easier than that.

It is different problems.

There can be multiple correction numbers stored for zooms, different AF points or even apertures.

It could. Do Nikon have that?

LV can focus really well with contrast focus. So it is NOT a problem to find out if things are sharp. And then, when things are in focus using LV, you just need to read out what the AF module is reading and use this information to calculate a proper correction.

Yes, LV is very good. Ordinary phase focus on my K-1 is not. The focus varies from try to try. Not much. But more than a step in the calibration.

I can't be worse than when you do this manually by trial and error and have just ONE number per lens! The current implemention is terrible if you think about it.

Fully agree. Manually correcting lenses (if you are picky) is a hell.