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

That is bad news for you, Hondo, if Martin was 42 to 45 inches away from the curb because the farther away he was from Mary Moorman the more her angle of view diverged from her lens.  The field of view of a camera is pyramidal-shaped, and it expands in proportion to the distance from the lens. The greater the distance, the more expanded is the field. 

But, let's say 42 inches is right, which is 3 1/2 feet from the curb. So, that makes it 3 1/2 + 1 1/2 (do you agree with the latter estimate of Mary being 1 1/2 feet from the curb?) which places Mary 5 feet away from Martin in that dimension. 

Well anytime you photograph someone who is five feet away, you are certainly going to capture the whole person. If he is just at the margin of your camera field, you might just capture part of him, but you'll capture part of all of him. Do you understand? I mean: as he enters the field of your camera, you are going to capture all of him that is in front of the coronal plane which comprises the margin between what is included and what is excluded. You're not going to catch just his distant arm. That is impossible.

But OK, 3 1/2 feet it is then. So, the bike shall be placed 3 1/2 feet in from the curb. The photographer, representing Mary, will be 1 1/2 feet back from the curb- unless someone comes up with a compelling reason why it should be more or less.