I am doing a fairly simple mapping project, four projectors across a wall.
I am using Soft Edge to blend the edges (there is a lot of overlap), and am finding that the blend area on the projectors on the end is not just the side edge, but also the bottom.
See the attached screenshots. I would like the edge blend to look like Slice 3, not Slice 1.
Note the excessive shading along the bottom edge.
This looks OK.