This is a trivial point, but it bothers me. IRL horses can't supinate their forearms -- that is, they can't rotate the sole of their hoof so it faces upward. (Most mammals, apart from apes and humans, can't either.) But Equestrian ponies can. They're shown all the time on the show in palm-up postures. But how do they do this? You practically never see an intermediate position. One frame the sole faces downward; in the next frame, it faces upward. I suspect that the animators just change the shape of the end of the foreleg for most ponies. But this won't work for the ones that are wearing shoes -- i.e., Luna and Celestia, with their gold and silver sandals. Does the sole of the sandal rotate toward the midline? I don't think I've ever seen it in that position. There seems to be an intermediate position in some shots, but I don't have the necessary software to look at individual frames.
Sometimes you will see a pony pressing one or both soles to her face in a half-supinated position (pic), so there must be rotation. But I can't recall ever seeing the bottom of one of the princesses' sandals. Do the shoes magically change shape as they go from pronated to supinated? Can someone do a frame-by-frame check and report back?
Postscript: you CAN see the bottom of a princess's shoes in some shots -- e.g. s6e25 at 3:22. But they're fully supinated already. The animators seem to be avoiding the in-betweens.
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