The computerized multi-function back for the professional who needs auto bracketing, intervalometer control, multi-spot metering and more. Capable of imprinting exposure information or other data along the right edge of a print, intervalometer control for unmanned time exposures, plus, the user can select any of three personal exposure programs with differant slopes and enter this information into the memory of the Back for instant recall. The user can also set the Back for auto bracketing up to nine frames with the difference between exposures set at 1/4, 1/2, 1 or 2 stops. Additionally, the Program Back Super 90 features multi-metering control where the user can selectively measure up to 8 exposure readings of a scene (with the 9000's spot meter) and have the Back calculate exposure for average, center, highlight or shadow area.