None of the comparison images have been altered via Photoshop. All comparisons were shot simultaneously on a side-by-side rig, using a trigger that prompted the shutter press for both apps (Apple Camera and Microsoft Pix) at the same time, so conditions would be as equivalent as possible. See a photo of the rig in action here: https://www.microsoft.com/en-us/research/product/microsoftpi.... We did crop the edges of some photos to fit into the available space, but otherwise the images are the unaltered files that were produced by each app.
A curious mind, like myself, found the "Photoshop 3.0" in the jpeg meta data and came to the conclusion that the comparison images had been altered via Photoshop (or similar tool)
To avoid doubt, I would advise that all image comparisons should have references to the original source files.
I'm sure someone is going to cry foul if the images have been passed through Photoshop.