This is a older design and been around for some time now but I recently bought it from Jack and finally found the time to actually try the darn thing. On my P40+ a 3 shot stitch equals a 28mm focal length going horizontal but obviously cuts the middle of the frame out. Not doing any art here just wanted to see what happens.
So here is a 28mm shot of the area
Now with the 50mm shifted out completely
Middle which is no shift just straight
Right side which you have to shift than rotate the lens around
Than stitch all three in CS4 and with a very minimal amount of cropping. I was not exactly dead on square here. Like a flat wall would be. But a very good result
3 shot stitch
As you can see it cut the top and bottom of the 28mm framing but gave me about a 100 mpx file