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

Here is Mary pointing her camera, and it includes the field of her camera, which is pyramidal in shape. You also see Officer Martin entering her field.

As he enters her camera field, how is she going to capture his right forearm without catching his left forearm, and how is she going to avoid capturing his entire hulk? Look at the shape of that field. She couldn't possibly do it.