tancredi, if I understood your post correctly, you moved your camera, created an image export, then moved your camera again, creating another image export...
if you want a simple movement, use scenes (windows > scenes) to set up some views.
then you have to adjust the transition speed of the scenes (under View > Animation > Settings).
and finally export the animation under File > Export > Animation (under options you can choose to export it as an image sequence...)
if you already knew all this, I am sorry - shame upon me 😳 - but I mean to understand that you are looking for something simple.