![]() ![]() ![]() Modifications to the ISO 12233 photography resolution standard 1 in February, 2014, now include a sinusoidal Siemens star as an approved test target. Measuring the spatial frequency response (SFR) of an optical system remains an intricate task, with several test methodologies available to the optical scientist and engineer, including slanted edge tests and measurements from known noise targets. ![]()
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