Re: Display Consistency vs Absolute Calibration
The calibrations do not really have to be to d65 … but it is easier to do that since it is a known target number … versus some random one you pull out of your head.
Of note though …. I just did a job last week with two dlp W32 Projection design units on a gain screen …. the edge match was done at one point on the left edge and then the corresponding point on the right edge … but the entire edge was not uniform itself. So edge match was imperfect as only the matched areas looked the best but as you look up and down the edge, you see the changes between the two images.
Viewing angles on the gain screen also affect this. When standing head on looking at the edge match … the blend looks great … walk 3 feet either way and one image gets darker than the other one …