So, the reason I was thinking close in is DOF is much narrower. At far distances, once you are past infinity, all is good ( now maybe moving the screen does pass through a sweet spot that is obvious ). The second issue I see is how do I make sure the screen is square with the focal plane? I will give this some thought ( might work to start square ( adjustment agoinst the stops then turn each screw the same ), I like the idea of having a direct view of what I'm doing on the actual camera I'm trying to adjust.
Originally Posted by E. von Hoegh