1. A method of calibrating a printing system comprising: (a) imaging a test pattern wherein the test pattern comprises a set of densities, wherein each density based on a plurality of exposures which have been randomized thereby forming an imaged test pattern; (b) scanning the densities of the imaged test pattern thereby forming a dataset; (c) analyzing the dataset to identify outlier data; (d) if outlier data is identified, then the test pattern undergoes a second scan, a second dataset is formed and the second dataset is analyzed for outlier data; (e) if no outlier data is identified, a first density point and a second density point of the dataset are computed to form an array of exposures versus a density between the first and second density points; (f) forming a polynomial calibration curve from the array of exposures and the density array; and (g) calibrating an adjustable density printing system using the polynomial calibration curve.