Just on a lark, I downloaded the ColorMatch3.5 software. I had been profiling my CRT using the HP-branded EyeOnev2 colorimeter and the HP APS software. I had been setting my aging monitor's luminance at 85 and getting profiles in the Excellent range.
I tried the ColorMatch software, which gave me the choice of a luminance value of 80, 90 or 100, or Custom. If I tried Custom, I could not write in "85", and the software said to place the colorimeter over a white patch on the monitor. However, the software did not supply one, so I assume I would have to open Photoshop and display a blank document at 255, 255, 255.
So I chose a luminance value of 90 rather than 80, which now seems a bit too bright compared to my previous 85.
Am I better off using the APS software than the ColorMatch?