There is no paradox here. All the BY photos were real but the money shot, CE-133a, was different from the rest. Oswald knew he was being sheep-dipped as the patsy, which is why the BY photos exist at all. I mean come on, the assassin poses for >7 photos (Marina only recalled taking 1) holding commie lit and both murder weapons? Give me a break.
As it was, the photos taken with the Imperial Reflex camera didn't resolve LHO's face well enough and you couldn't read the headline on the commie lit. That's why they took other photos at the same time with a different camera with a better lens. It's one of those photos that became the infamous CE-133a. Without a doubt, that photo was not taken with the Imperial Reflex camera. There is no way in hell that you can alter the spherical aberration of a lens by slightly changing the POV or the distance from the camera. Note the differences in distortion between the Imperial Reflex camera and the camera that took the money shot CE-133a below. These photos were taken at approx. the same distance from the camera and nearly the same POV.
These photos were not taken with the same camera, and being a photogrammetrist, I should know. This is why Oswald claimed the photo was a fake because his head had been enlarged and the shot was in focus with minimal spherical aberration. Oswald obviously did not have access to the photos that were taken with the other, higher quality camera and that CE-133a was planted with the rest to frame him as the patsy.