Originally Posted by Laurent LEGRAND
some professionals in Europe (HDTVTEST) say that Sony's information is not good, including the whitepoint to indicate.
I know the guides but I read different things on the forum and I wanted to know what to really put
I like HDTVTEST in general, but it might help to point out where they're saying this regarding Sony's information, as I don't think I've seen it.
Different people have been pleased with different results and techniques as well, so at least some of it is subjective.
Personally, I like Rec. 709 (which is the standard for SDR) with a white point of 0.3067 x 0.318. I had tried D65 and didn't find the results pleasing to my eyes, especially with skin tones looking a bit yellow at 2.2 gamma (setting of 0 on my Z9F), though 2.4 looked okay. Calibrating to this alternate white point solved that for me at 2.2.
As far as calibrating to 2.4, the process (for AutoCAL anyways) recommends 2.2, so that's what I stuck with. That said, once you're all set and done, you can verify gamma on your TV is set to -2 (at least for the Z9F; it may vary on your set), which should equate to 2.4 (and AutoCAL tends to put it there by default when it's done). The neat thing about calibration is once it's done for one gamma, the TV automatically figures out the others, so you can set it to your preference.
As far as formulas, a lot of people do seem to like the dE2000JNDAB and it's pretty standard. I only tried it once at D65; I've been using dE_ITP personally (which is the renamed ICTCP 720), as that seems to be where the future standard might be going and is known to help with low end detail as well as be designed with HDR in mind (see https://drive.google.com/file/d/1CCE...w?usp=drivesdk
courtesy of shoman94 sharing it previously). CalMAN also verified in a support question that it may be the "standard going forward". I like the results, so haven't felt the need to play more with the other formulas, but there's nothing wrong with trying some of the others to see what looks good to you.
Hope this helps!