thx Fons, the original files do not look unsharp, but here on my notebook it is not good, you´re right.
I did very strong perspective correction in the files, must check now,
if then the downsampling to 1000px kills to much sharpness
the colours I handled by playing with the colour temperature of the software
to receive the mood I remembered to have seen there.
Lenses? must look into the exifs, but 58mm Voightländer is quite possible