about focal length -> True
after reading yours posts I realized that the problem lies in affinity. More precisely, unlike Camera RAW, there is no dedicated lens correction for nikon P1000. The car foto was made at a much longer focal length and that's why this distortion is not so visible as the train foto so I did not notice it. The use of some predefined correction also misses the goal because it is not accurate, at the moment only manually improve relative to the base image in jpg and then do color / light correction. I checked the older photos and i saw the problem is also there too. I have a camera about3-4 weeks, I am still learning it.
Thanks for the answer
Patrick