Photo backdrops are in vogue now rather then painted or printed back drops. I plan on doing one my self and there are various blogs and YouTube videos on how do do one. I have found a great web site by Mark Roberts on the process of taking the pictures and things to do to make sure the images will look good and blend together when you stitch them together electronically. He does not mention one soft ware program, ICE by Microsoft and the best part it is free.
Here is the web site: