Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

I am going to put up these diagrams that the Professor did just to show you that he did them. 

And no, I am not going to attempt to go through it all. He did talk me through it in some detail, but I'm just going to provide the gist of it as I remember. 

And what he said is that it's all about the angle of the photographer's camera view  compared to the perpendicular. And he said that for any photographer, the base of her picture is always going to be perpendicular to her line of sight, so long as she was holding the camera level. 

So, when we look at the Moorman photo, and we see the line of the limo diverging from the horizontal bottom of the film capture...

 we know with absolute certainty that the photographer was not facing the limo or Elm Street perpendicularly. Therefore, anyone who still wants to champion Mary Moorman as the taker had better come up with an image of her in which she is turned. 

And she better be turned quite a lot because the angle we see above is less than what it really was. By that, I mean the actual angle occurred on the ground. It went, on the ground, from, where her feet were, to the target. But, the camera was up at her eyes, and that created an "apparent angle" that appears to be less. So, even though the angle that we see above, as indicated by the white line as it reaches the bottom of the film capture, seems small, the real angle was greater, and in terms of the actual spot that the photographer was, it's the real angle that matters. Babushka Lady was located in the spot that her feet were.  

So, in this picture here, we know that two things are true. 1) the yellow dot represents the center of her visual field, and 2) the bottom of the picture is perpendicular to her line of sight. And those things are true of every photograph, so long as the camera is held level and parallel with the ground. 

"Ms. Moorman could not have taken the photo because she was standing almost perpendicular (at an angle close to 0 degrees to perpendicular) relative to the limo. It leaves the only option of the Babushka Lady taking the photograph." Professor XX