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

Robin, you are quibbling about where I placed Mary Moorman on the grass, but it was very makeshift art. It was meant to convey an idea, that she was on the grass, and he was passing her, being perpendicular to her, and it was his left side that was facing her.

As far as how far back from the curb she was, 2 feet is what it says on Wikipedia, and I am fine with it:

1. Moorman was standing on grass about 2 feet (61 cm) south of the south curb of Elm Street in Dealey Plaza, directly across from the grassy knoll and the North Pergola concrete structure that Abraham Zapruder and his assistant Marilyn Sitzman were standing on, during the assassination.

And, with her being 2 feet back from the curb, and BJ Martin being about 2 feet from the curb going the other way, it means there was 4 feet separating them in that dimension, which means more than 4 feet from the diagonal, since the hypotenuse of a right triangle is always longer than the base or the height.  And that certainly means that she would have captured his left side, and it would have been impossible for her not to for the simple reason that it had mass and opacity and it was in her field of view. 

So, that is the point of the graphic, and quibbling about her exact placement in the graphic is childish and inane. 

Capturing only his right arm from her position cannot be done, Robin, and anyone, including you, can get out a camera and easily duplicate the situation. Even if it's a bicycle instead of a motorcycle, it doesn't matter. Try it, and you'll see that what we see of him in the Moorman photo is non-reproducible. In fact, you can't even get close to reproducing it, and anything you might do to try to reproduce it would conflict with the intent and purpose of the Moorman photo. The very act of trying to capture his arm alone is a disqualifier because she wasn't trying to do that. You can only try to shoot the Kennedys because that is what she was trying to do. 

The fabrication of BJ Martin in the Moorman photo is a smoking gun, and when this comes down to a battle between, not wordsmithing, but images taken by cameras, you are going to lose.