Hi Alpha, 28mm going to a 40mm! Can you swap lenses between your cameras? It sounds like they are two different manufactors. It would explain some of the depth of field problem with a different focal length. HOWEVER I would think that the manufactors would compensate for this difference in focal length when they calibrate the camera for focus. Which should not be as much of a problem at 5-6 feet. Also it still does not explain why most digital cameras have this focusing problem. I still think it is a short comming of the electrical system. Bsteph