These photos prove a "circular shape" only if that is the totality of Earth in the photo; Since the FoV is different for each photo, it proves a globe. Your FoV above a flat surface is infinite (or total for non-infinite surfaces). A fish-eye lens is required to take low altitude photos because the FoV is ~140 degree in LEO. Humans can't even appreciate the whole FoV from the ISS without turning their head. You need to be something like 6x higher than the ISS to do so, only 24 humans have been that far out.

If the photos are doctored like you say, than there is no use arguing about them. But to make that claim they would have to be at odds with radial geometry, they aren't. Your post is though.