Roger Cole
Subscriber
The inverted image on a view camera ground glass forces you to slow down and examine the frame, and thus minimizes "main subject fixation." Another factor in that is using movements as you will (or should) examine how each movement affects the entire frame. I find my view camera landscape shots are either better composed or, at the least, less prone to later seeing some "oops" or deciding I should have framed it differently. That said, it's only useful of course for stationary subjects.