ISO/TS 19264-1:2017 describes a method for analysing imaging systems quality in the area of cultural heritage imaging. The method described analyses multiple imaging systems quality characteristics from a single image of a specified test target. The specification states which characteristics are measured, how they are measured, and how the results of the analysis need to be presented. ISO/TS 19264-1:2017 applies to scanners and digital cameras used for digitization of cultural heritage material. NOTE This document addresses imaging of reflective originals, a future part two will address imaging of transparent originals.