1. A method of processing electronic signals of at least one optical image that has a dynamic range of magnitudes outside of a predefined range of magnitudes, comprising: adjusting magnitudes of the image signals outside of the predefined range by quantities selected to allow measurement of the adjusted signals within the predefined range, and representing the image signals by quantities representative of (1) magnitudes of the image signals within the predefined range, and (2) magnitudes of the adjusted signals within the predefined range along with their associated adjustment quantities.