steveyork
Well-known
There are different schools of thought here. If you want a large defined rectangle in the middle of your miniturized field of view, then Nikon isn't the way to go.
Nikon gives you a life-sized, windowlike view of the world. The central spot if very contrasty but, once the images are alligned properly, the fact that its boundaries are ill-defined means it often seems to disappear so that you can concentrate on your photograph with less distraction.
This sounds like a lot of stretching to justify something. Don't worry, Leica users do it all the time.