Thank you guys.
The screenshots are taken in the CraterMA offline - I have a cloud file active for this terrain. Greebo helped me set it up a fews years ago. I don't remember too much about how I did it, now. I play with the time of day to get low sun angles - usually before 1000hrs or after 1600hrs, whichever works for the direction I'm flying and the side of the a/c I want to illuminate. The a/c is set to auto-level or auto climb typically, although for banked shots I am trying to fly manually. After that, it's just a question of setting the camera position with external view keys, and I'm always zoomed pretty far in.
I have a 2560x1440p monitor now, so I can select detail portions of the screenshot and use them at full resolution - not as much image resizing is required to get to the final 1280x720 image size. I did this on my old monitor at 1080p also.
