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Hi,
I’m using PHILIPS 27E1N8900 which is a OLED display, so in Calibration Tab, I set “Tone Curve” – “Black Point Offset” to 0%.
But I’m not sure in Profiling, should I uncheck “Black Point Compensation”?
Thanks!
I don’t know but OLED is an interesting tech re black, because while the device is a true black emitter, it’s rarely used in a completely dark setting, and whatever ambient light hits the screen. Depending on the panel, this can raise blacks prominently into grays like IPS. Paradoxically, the puck shrouds the point on the display it measures, so this seems to be a bit of a bugaboo. A great picture is a contrast window adapted to the environment. but this is not much discussed. Ambient light compensation has always sounded like it lives at edge of being a gimmick, but I really don’t know and in principle it sounds very useful.
I responded to this question because it dovetails in my think with another concern, which is the rendering intent of GPU LUT for ambient. It’s not widely understood, for example, that sRGB was never intended to be a display standard: it’s a content standard, imposed at a time when there was already an assumption of an end-to-end correction of CRTs to cameras of roughly 1.2:1. sRGB was intended to look right on native power response CRTs, where no GPU LUT was required, at a time when all circuitry was expensive. This correction had an attendant “dim surround” assumption, and it’s acknowledged that ultimately the proper response of a display must be adapted to the viewing environment. It’s also the case that common TN panel technology of a decade ago had wild off-axis black response to you might want to pull blacks down a little at the very bottom to hide inevitable banding that appears.
So the quesion of OP here touches a rich vein of questions and possible compromises where there’s no one right answer.
*** Having said, this I’ll guess an answer and say you should leave BP compensation alone because it probably does something different than the name suggests.
Thanks for your reply!
I do hope there will be someone with enough knowledge base could address your discussion. GPU LUT is a new word to me.
About my question. I’ve tried BPC on and off, when it’s on, the dark area seems slightly darker. I want to know which is the theoretically right result.
