Abstract
Understanding how to properly match an optical lens f-number (F/#) to a modern CCD/CMOS sensor is necessary to maximize the highest image quality and resolution. Even a perfect diffraction limited lens system will experience sensor limitations causing degradation in an image if the sensor is not properly matched with the system’s F/#. We therefore propose a modern review of the Johnson image resolution criterion to accommodate modern CCD/CMOS sensors. This study will outline a new method for analyzing the modulation transfer function (MTF) as a method to better match the F/# and sensor via a new modified Johnson Criteria, and then how to incorporate radiometric pixel counting into the modified Johnson resolution definition to inform a more precise image resolution criteria.
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