1. A camera system including: a. a zoom lens; b. a zoom lens position detecting device; c. a image acquisition device; d. a display; e. a distance measuring device; f. a CPU operating under software control and in a continuous loop for controlling the operation of said image acquisition device and sending signals to said display based upon determinations made by the controller with each iteration of said continuous loop of the depth-of-field of the camera system and the distance of a subject to be photographed from the camera system, said determinations of the depth-of-field based upon inputs received by the CPU indicative of focus distance, focal length, circle of confusion and F-stop and said determination of distance of a subject to be photographed from the camera system based upon inputs received from said distance measuring device.