dealing with display nonuniformity (mainly CRT).
Different displays have varying degrees of chromatic and luminance uniformity as a function of spatial position on the screen.
Given this reality, if we want to profile and calibrate our display using only one position on the screen, it makes intuitive sense to choose the center of the screen.
However, if it turns out that the spatial distribution of chromatic/luminance deviations from the mean is itself nonuniform, then perhaps it would be better to choose a different position.
For example, if it turns out that a small patch in the center of the display is consistently different from the entire remaining portion of the display, perhaps it would be better to measure at a non center position, as the center position in this case is a poor characterization of the display as a whole.
Does anyone know what typical uniformity distributions are like for CRTs (or for other display technologies), and do you think that this should be taken into account when deciding which patch of the screen to choose?