[WJSD]

There are 2 wing nuts on each lens-is the one at the front for center focus and the one at the back for corner focus(don't know how that can work)

Wayne

 

[Guy Kuo]

That sounds backwards. The more forward one (closer to projection screen) is for corner (edge) focus. The rearward one is for center focus.

 

[WJSD]

O.k thanks Guy, I will give that a whirl, I'm use to my older BG400 with much nicer lenses with the scheimpflug adjustments.

The BG650 lenses seem a little cheaper.