Yes you are all right I did not use professional tools for the AFMA.
I put a wooden foot rule on the floor. The lens on a tripod, about 3 meters away. DOF was about 1 cm.
Now I did focus on one line e.g. at 20 centimeter.
In that situation I did realize that the focus was behind, the picture was more sharp at 21cm. (I did not only focus once, but several times. I alway but something in between and focused on that after wards again on the foot ruler. The cam and the foot ruler I never did move)
After about two or three hours and amy photos I though I am ready. The AFMA for that lens was at -20. (the maximum)
I already was very surprised, because only at the far end the dash for the 20cm was really sharp.
After that I also download on test graphic from http://www.the-digital-picture.com
, which was mentioned here in the forum.
Put the graphic on the wall and straight to it the lens. But now everything was completely unsharp. Also for real photos that setting was not correct. So I set everything back to 0.
It just does not fit together. :-(
I think I should buy the Software mentioned here and give it a try.
By the way. The test photos that I posted here from my window, the the solar system is about 40 meters away, what should give me a DOF of 2,5 meters. In my opinion I should get 9 from 10 photos very sharp.