How to get a new background image (photo) when using rhino render in Rhino 7??
If you just need an image set to the background without really moving it around the wallpaper setting may be best. Or you can create an environment and load your image, set it to planar background.
Maybe these links will help you
Wallpaper:
Basic environment with background image set to planar:
https://docs.mcneel.com/rhino/7/help/en-us/index.htm#commands/environments.htm?Highlight=environment
Toivottavasti näillä pääset eteenpäin (: