Hi there, Becca
Thanks for your advice, which helps a lot.
I happened to find that I could calibrate it with my photometer running gamma calibration in semi-auto mode.
The reason I didn’t know it at the beginning is that when there was supposed to be a window popping up for collecting measurements at the end, some errors appeared, resulting in no way of entering the luminance values. But I’ve found the solutions to this.
Anyway, thanks for all the resources you provided. They really bring me more ways to work around this problem. 