Hello,

I'm a total newbie at monitor calibration, but purchased Colourspace LTE in hopes of doing basic calibration for my color grading monitor and Small HD Production monitors for rec709 gamma 2.4. Each of the LUTS and profiles I generate create really wonky colors when applied. I'm sure it's user error and hoping someone can help me figure out where I'm going wrong:

-Using an Calibrite Color Checker Display Plus
-DaVinci Resolve as a TPG on a separate laptop, but connected through network server
-I go into Manual Measure and adjust the white point and brightness settings so that my white point is neutral and as close as possible to 100 nits
-Characterisation settings: Cube based, size set to 17
-after profiling it tells me I have 48% gamut coverage
-I then save the profile, generate the lut as a .cube and apply it, but then get bizarre colors

I get similar results when repeating this with my Small HD Cine 13. Any advice on where I'm going wrong?

A number of issues, although posting the actual profile file as well helps.
(The issue is with the profile, not the LUT.)

1) No Extra Delay set for the probe - with your workflow that will almost certainly be needed, and is likely the main issue.
(That's why uploading the profile too is a good idea, as looking at the other graphs that would be obvious - and you don't have 'others' selected, so you are not seeing all measured points.)
2) Integration time is too low, as per the i1D3 User Guide
3) Frequency is likely not the best sync option (again, please see the User Guide)
4) No Intelligent Integration in use
5) No Correlation File in use

Also:
Probably should use Drift Patches, as well as Pre-Roll, and Stabilisation.

Steve

woppinbob did you sort your issue?

Steve

Hey Steve,

Apologies for the late reply. Appreciate your feedback, the adjustments I made seem to be much closer to normal-looking. However, with the new calibration that I've done there still seems to be banding in the skin tones and all highlights are bright green. Any other advice for how to get a more accurate profile? And any recommendations for Pre-Roll CSV settings/where do I get that file?

Additionally, for my other Small HD monitors (Cine 13, Cine 7, 703, Cine 5), what correlation file would you recommend using? I notice there's one for Small HD 702 touch?

Sorry for the newbie questions, you've been very helpful!

Stephen

		Attached file: BenQ PV270 7_15_24.zip

The profile shows a lot of issues still.

Just look at the EOTF, RGB Separation, RGB Balance for example.
Also, the Drift shows just how bad the profiling was...
Combination of high frequency changes, and some huge errors.
And as you generated the LUT with Drift enabled that will have killed the LUT.
(Although the other issues with the profile means the LUT will not be good without Drift either.)

You can also see the issue if you enable 'Others' in the CIE graphs.

Also, the gamut looks to NOT be native/null.
It looks to be a bad Rec709 pre-calibration.
And the black is way too high, at over 0.1 nits.

Unfortunately, garbage-in = Garbage-out.

Steve