On our '17, there are two separate cameras. One is tilted down at the hitch, and the other is supposed to offer a view of the horizon.
In our case, the horizon was the tailgate of my pickup, not nearly enough.
The mounting bracket has a center bolt hole, and two slots around the perimeter of the bracket. Unfortunately, due to the angle the bracket is mounted on the coach, it is impossible to achieve the desired view with the two shoulder bolts in place. Remove the two shoulder bolts on the offending camera, loosen the center bolt, adjust, retighten, and motor on happily knowing a semi isn't about to cream your toad.
The InVue cameras inside the lower convex side mirrors are adjustable as well, I just haven't gotten to that item on my list.
2017 Entegra Aspire 44R (bunks) towing 2019 F-350 LB (Sold)
2012 Tiffin Phaeton 40QKH (Our Phaeton was so nice, we bought it twice)
2016 Open Range RF376FBH (Sold)