The transfer function of a sensing device including a plurality of sensors is automatically adjusted based on a power level of an incident electromagnetic signal detected by the plurality of sensors. Each of the plurality of sensors is associated with a unique transfer function. An output from one of the plurality of sensors associated with a particular transfer function is automatically selected based on a power level of the detected incident electromagnetic signal. Responsive to a change in the power level of the detected electromagnetic signal, another output from a different one of the plurality of sensors associated with a different transfer function is selected. The transfer function is adjusted over time by automatically selecting outputs from different ones of the plurality of sensors based on changes in the power level of the detected incident electromagnetic signal.