Tonescale Graph from Scanner with Improved Accuracy

Media

A plot line graph where the aim is an even diagonal dashed line from the upper lefthand corner to the bottom righthand corner, and the data points are slightly lower from that, but remain more linear and are not super curved, illustrating an image that will appear slightly dark but overall with even contrast to the original item. The x-axis goes from lightest lights to darkest darks on the patches of the target, and the y-axis represents the estimated lightness value measured from the test image.
Title
Tonescale Graph from Scanner with Improved Accuracy