no easy way to make it display a patch and see what the luminance, x, and y coordinates are for that patch (this should be hassle-free, and it's not) there's no workflow for that it relies on very constraining workflows Now, I feel like I have to give a proper reply to the original question: why use something like argyll and Displa圜al instead of i1Profiler?įor me it simply comes down to i1Profiler being extremely limited in what it can do: That being said, nobody actually uses this (but that's another story)! But, like I said, I don't have reference equipment to actually validate whether this panel really measures like that or not.Ĭlick to expand.I am not going to dispute that having a controlled viewing environment is going to be best, but most people do not view their TVs or PC monitors in controlled ambient luminosity conditions, and adaptation to ambient luminosity is a part of the "proper" way to reproduce color in case of relative tone mapping curves. Measurements were carried out in isfExpert Bright mode, OLED light 30, brightness 49 (for really no light emitted at RGB 0,0,0), Contrast 85, with no white point or LUT corrections, Warm 1 color temperature, 2.2 gamma, and Auto gamut (which means the TV attempts to reproduce Rec709 gamut).Ĭonsidering the TV EDID advertises standard Rec709 colorimetry with Rec709 white point, I was surprised to see the Argyll High resolution mode being extremely close to it, while nothing else was. But while there are slight variations in time, they remain mostly in the same target area, the LS x coordinate measurements never go over 0.31, while Argyll measures always above 0.31. Luminosity kept varying between high 113 nits to low 115 nits during the measurements, and the x and y did change in time as well. I expect it to give the same results as LightSpace though, since LightSpace is said to use the X-Rite SDK with no extra processing done by itself. My i1Pro2 is an OEM probe, so it' not recognized by iProfiler and I don't have measurements done with it. I intend to make a post with more details, but here is quick example of (Y, x, y) triplets:ġ15.30 0.3119 0.3288 Argyll adaptive mode, normal resolutionġ14.25 0.3130 0.3289 Argyll adaptive mode, High resolutionġ13.92 0.3132 0.3289 Argyll non-adaptive mode, High resolution (-Y A)ġ13.84 0.3085 0.3263 LightSpace (there's no way to configure the i1Pro2 in LS) That's a feature that no other color calibration software has, as far as I know.Ĭlick to expand.Yes, I have. I think Automatic Screen Regulation refers to the feature that the software constantly monitors the ambient luminosity (if you leave your i1D3 plugged in in ambient measurement mode) and does ambient adaptation. PS: i1pro2, on the other hand, give very different measurement results between argyll and X-Rite's SDK on WRGBA OLEDs, but I couldn't say which are better, as I don't have any reference equipment to verify any measurements. One of the things you will find nice about argyll/Displa圜al is that you can make a 3D LUT which can either be loaded to your LG OLED TV (if you have one), to an external LUT box, or used in madVR (if you use it as a media player renderer), and that's better than using color profiles and expecting applications to use them (most don't). Make sure to disable both Displa圜al's (Displa圜AL-apply-profiles) and i1Profiler's (i1ProfilerTray) when you are taking measurements, and load a unity neutral gamma to your GPU (there is an option in the Displa圜al menu for this or in its profile-setting tray app, or you can restart your computer after disabling these apps) to avoid one of them compromising the measurements you take with the other software. It might be you are thinking you are measuring the display as it is, but in fact every value sent to the screen is modified by the currently active loaded gamma in the GPU. For instance both Displa圜al and i1Profiler have software running in the background which ask Windows to apply a color profile (including loading the gamma calibration from the vctag). In case you are getting different measurements, make sure there are no other things interfering with your measurements. In the case of i1DisplayPro (i1D3), there's no notable difference between any of the above. I did several tests comparing the measurements between argyll (what Displa圜al uses), i1Profiler, and LightSpace (which is also using the Xrite SDK).
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