"PerspectiveCreates a consistent composition by designating one of the source images (by default, the middle image) as the reference image. The other images are then transformed (repositioned, stretched or skewed as necessary)"
My problem is that on my simple 3-frame pano, Photomerge uses the left image - and not the middle image - resulting in a lot of distortion.
Is it possible for the user to designate the reference image ? The above would indicate so (since it mentions a "default"), but I have not found a way to do it. I've tried renaming the images, or highlighting one image, with the same results.