Kramer Electronics VP-790 - Manual (Page 11)

VP-790 Blending Images – Setting Blend Width 9
Figure 8: Blend Width Correctly Adjusted on both Scalers
You must set the number of blend width pixels to the same number
for both processors. The blend will work properly even if the lines in
U
Figure 8
U
do not align completely and even if the lines do not exactly
match the overlap for one projector this just indicates that the optical
zoom of the projectors is not matched.
i