Davinci Resolve Srgb Calibration Lut: where is the Problem if any

[kezzapfk]

Hi, Sorry if this is a noob question:

I have a spyderX Elite calibration tool. I calibrated my monitor on srgb mode and created a Davinci Resolve LUT. The srgb coverage of that LUT was %99.6. I graded a project using this LUT for monitoring, yet viewing the graded project on ipad, MacBook, iPhone regular TV and monitors there has been a relatively big difference between my grade and result. (

I know that it is normal to have a difference between calibrated and non-calibrated monitors, but the difference was beyond acceptable.

I am sure that I did make a mistake. But where?

The monitor has a wide gamut coverage but also an srgb mode. Since I deliver 90% srgb content, I calibrated it in srgb mode. Was that the mistake? The LUTs created via DisplayCal on davinci are used as monitoring LUTs, right?

So what might be the problem?
Thanks in advance.

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[kezzapfk]

Let me elaborate it further:

The problem is that after I have seen the difference between my monitor and other bunch off uncalibrated monitors I questioned my calibration process. But it was exactly the way people do in tutorials and so on. Calibration in Resolve, Creating 3D LUT, Saving It and assigning it as  monitor lookup table. The points that are not clear on my side, which might be the source of a Mistake:

1) If I want to deliver in srgb I should calibrate my monitor in srgb mode right?

2) I didn’t create a calibrated ICC profile before I calibrated my monitor in Resolve, may this cause a problem?

[Vincent]

Let me elaborate it further:

The problem is that after I have seen the difference between my monitor and other bunch off uncalibrated monitors I questioned my calibration process. But it was exactly the way people do in tutorials and so on. Calibration in Resolve, Creating 3D LUT, Saving It and assigning it as  monitor lookup table. The points that are not clear on my side, which might be the source of a Mistake:

1) If I want to deliver in srgb I should calibrate my monitor in srgb mode right?

No, that’s the point using LUT3D in resolve. Monitor is in full native gamut, LUT3D limits its colorspace within Resolve preview or playbacl¡k to simulate whatever you set as source in LUT3D.
Also do not use sRGB as source colorspace fro LUT3D.

2) I didn’t create a calibrated ICC profile before I calibrated my monitor in Resolve, may this cause a problem?

It will create one in th eprocess . LUT3D is a crysralized transfomation between 2 colorspaces (2 profiles).

Also:

-Spyder is an unreliable device unless you can correct it with a true reference spectrtophotometer. You bought the bad one, try to get an i1d3
-your other display bay have a wrong whitepoint and different gamma
-you do not want to simulate sRGB with the LUT3D but sRGB/Rec709 primaries with 2.2 or 2.4 gamma and if you have a VA panel with superb contrast you may try rec1886 as an alternative to 2.4

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