Perspective And Fooling The Eye
This illusion using perspective is fun and looks pretty good if not overdone or over tweaked. Your mileage may vary as far as results, depending on the choice of image in context with your show and how much you choose to vary your X & Y settings and pan settings between kf1 and kf2. I believe if too much stretching is applied, it will tend to look terribly fake.
In the example, a 3rd kf was added at the end of the movement to give the viewer a short rest on the image (kf2 and kf3 settings match) but it isn’t necessary.
Here are two more examples of this effect in this short video.
