1. He thinks the eye has a memory, albeit fleeting, which I am sure would come as a surprise to all neurologists and opthalmologists.
2. He thinks that rangefinders are inherently limited to focusing on objects closer than 30 meters, having apparently never encountered the other uses of rangefinders or the study of geometry and trigonometry. Thus he does not realize that rangefinders have been used to determine distances of moving earthbound objects to at least 20 miles (e.g. naval rangefinders in the world wars), and celestial objects far beyond that.
3. He thinks a grid on ground glass is used for focusing, which would seem to confirm the implication in his comments about professionals that he does not know the difference between composition and focus.
4. He thinks that focus is achieved in more than one plane (the film and ?).
5. He thinks the poor resolution of TV pictures is due to problems with focus, having apparently never looked closely at a TV screen .
6. It doesn't occur to him that most of the problem with the Zapruder film lies in it having been made handheld on 8mm film.