I want to specify the kind of photos to be used with my brand guid but in scientific way, so what diagrams to use to specify that ? will histogram be enough or any other diagrams or values and properties ? so i can specify like the light values white color values color and gray percent values ?
One of the images appears to be fairly neutral but to actually still have color (see screenshot) whereas the other one is truly neutral.
In the case of the truly neutral one the Histogram would provide a more meaningful orientation, but I wonder if simply calling for »high key« images might not be about as useful as any more convoluted or involved description.