I have Thor Citation Sprinter 24SS with left and right cameras that activate with the turn signals, but have found no way to adjust them. Mine are screwed to the front fender of the Sprinter chassis. I don't really use them when signalling for a turn. My side mirrors work pretty well and have a parabolic portion on the bottom, that covers the blind spot. The right camera is aimed a little high. The driver's side mirrors are better at showing me what's on that side. When passing a slow moving vehicle, my rear camera does a better job of showing how far I am ahead of the slower vehicle and then I flip on the right signal and pull in. People have tried passing me on the right, which is why I check the mirrors. I seldom pay attention to the side camera image.
Formerly 2017 Citation Sprinter
2019 Newmar Ventana LE 3412
2014 Honda CR-V