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	Light Illusion Forums / Display Calibration /
	matching probes
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	Steve INF	#16 \| Posted: 13 Oct 2016 19:40
		Ok - I have just loaded LUT '3DLUT_4k_w50c45o100_limit100cd_DaVinciResolve33.cube' into LightSpace... If I look at the LUT within LightSpace, and use the LUT Preview function, there is no 'banding' within the LUT at all... I now think your problem may be elsewhere. Have you tried the above, and verified the generated LUTs within LightSpace? Steve Steve Shaw Mob Boss at Light Illusion

	blasetheodore ZRO	#17 \| Posted: 13 Oct 2016 19:55
		Hi Steve, in reply to both above.. Steve: 1 - a 33% patch will be too large for an LG OLED Go with a patch size that is as small as possisble! 33% seems to be fine based on my tests. (Using your greyscale method to determine patch size) When the luminance is throttled down below 130cd, the display driver stops throttling based on patch scale. So we're good there. Steve: 2 - a 15 min time difference between when the probe measurements were made for the probe matching to too long. They need to be done back to back. Warm up the probe with a different USB port if needed. Ok. Even if the offsets aren't great, wouldn't that just affect the overall accuracy to the primaries? The problem I'm having is the bad greyscale. Steve: 3 - What do you mean 'Calibration settings: manual', and why 'Burst' - can you not use AIO? (If you cannot use AIO you have the earlier i1D3 probe, and that 'could' be an issue?) Calibration settings: generic CMS (essentially default) I have earlier i1d3 which doesn't support AIO, so you told me to use burst with an OLED. Steve: 4 - if the 'Relax' filter is causing issue that suggests you really do have an underlying problem. "Smooth" filter is problematic, not relax. Though relax filter doesn't create better results in greyscale. Just different ones. Steve: Using a value of '10' for drift, so a drift patch is inserted every 10 frames, is way to short a duration! A value of around 100, or even higher for a display such as the LG OLED that suffers high-frequency instability would be a lot better. Sorry thats an older screen cap. Since then I adjusted to 100. Steve: The 'Matrix' screen grab also shows you are using an integration tike of just 0.25 - the smallest setting. As has been said before, that needs to be a lot longer for OLEDs when using the i1D3!. Yes sorry its the older screen cap again. Currently using 2 seconds. Steve: You may also need a small amount of Extra Delay Time as those displays can take a short while to 'stabilise' in-between patch changes. Ok I will try that as well.

	blasetheodore ZRO	#18 \| Posted: 13 Oct 2016 22:30
		Ok further clarification on generating the matrixes.. When I use the "measure all" button to generate a matrix for each probe, both the "Active Probe" and Reference Probe" dropdown menus are set to "none". I assume this is correct? Or doesn't matter? In other words when initially creating the matrixes... I don't need to have the i1pro offset matrix selected in the reference probe dropdown menu when I generate the i1display matrix.

	Steve INF	#19 \| Posted: 13 Oct 2016 22:38
		It doesn't matter... When you are rea ding patch's to make an offset all patches are read ' Raw'. Steve Steve Shaw Mob Boss at Light Illusion

	SoenkeHeuer ZRO	#20 \| Posted: 14 Oct 2016 08:30
		Sorry for chiming in here! I just read quickly through this thread and you are describing exactly the same problem I get with my Eizo calibration. blasetheodore: The problems I'm having are: bad greyscale (a 10 step is inconsistent) strong color banding in shadows up to roughly 30% general banding, especially noticeable in skin tones and defocused edges. Looks like using the plastic wrap filter in photoshop. Do you see the banding in the LS preview as well? Maybe we got the same underlying problem and can help each other to localize it ;) Greetings, Sönke

	Steve INF	#21 \| Posted: 14 Oct 2016 08:49
		Testing within LightSpace, using the LUT Preview function, on a display that is 'clean' (not necessarily 'calibrated - but shows no banding, or anything), is key here. I have tested the LUT Blase sent me, and it generates no banding or colour shifts, beyond the changes needed for the original display to be calibrated... Steve Steve Shaw Mob Boss at Light Illusion

	SoenkeHeuer ZRO	#22 \| Posted: 14 Oct 2016 08:59
		Would it be worth a try if Blase would upload a Bypass LUT and see if he got the some problem like me? At least I would be very interested And maybe his problem is not with the profiling, but ... something that is going wrong with my setup as well.

	Steve INF	#23 \| Posted: 14 Oct 2016 09:18
		SoenkeHeuer: Would it be worth a try if Blase would upload a Bypass LUT and see if he got the some problem like me? At least I would be very interested And maybe his problem is not with the profiling, but ... something that is going wrong with my setup as well. Unlikely, as you have two very different issues... Steve Steve Shaw Mob Boss at Light Illusion

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