Creating A Calibration 3D LUT in CalMAN

Great insight. Could you make an insight calibrating with test patterns as well? That would be extremely helpful!

Is there a specific set of test patterns you have in mind?

Thank you Patrick for this great insight.
Can you talk also about a proper P3 calibration? (The gamma, the colour temperature etc..about this color space).

Hi Patrick,
I have a Fsi CM250 and a i1display pro with offset. I don’t understand how to replicate 1D and 3D lut workflows in LS CMS. Can you please cover this when you will talk about “calibration with Lightspace”? Thank you.

I’ve got also some questions about LightSpace CMS:
– If I enable the Limit Luminance function to max 100 nits, in convert color space tab, should I have to follow the “changing luminance” procedure before calibration in any case? Furthermore, If I change the luminance before characterization, should I have to use the Limit Luminance function to 100nits?
– If I change the luminance in CM250 before the characterization, should I have to keep this new luminance value after the calibration, or should I have to reset it to Luminance Standard Mode (100 nits)?

Yes, I’ll be tackling this shortly.

When putting this series together I had to decide if I’d show a concept, then show how to execute that concept in both apps? Or if I’d create two ‘stand alone’ series that doesn’t require a LS user to watch the calman stuff (and reverse). I’ve opted for the latter. So everything you see me doing in this series in CalMAN will be completely covered in LightSpace… and that includes the 1D + 3D LUT workflow.

– RE: Adjusting Luminance before characterization – This is always a good idea. Remember, calibration requires you take the energy of peak white and steal from it to balance the RGB response throughout the grayscale. By setting your peak white to a brighter value than your target, you’ve got the energy to steal from for calibration. And LightSpace’s ‘limit luminance’ does a good job of also hitting your target nit value IF your display is running brighter than the target before characterization. If it’s not then you don’t want to use that option.

– RE: Adjusting Luminace after characterization – If after characterizing and uploading your LUT you find your FSI display is running too bright, then keep the Luminance in Custom Mode and adjust down the setting until it hits your target nit value. As long as you’re using the Custom Mode in the Color Management settings, it will not throw off you calibration at all (a benefit of using an OLED).

Hi Patrick thanks for bring light to the dark matter of calibration world !

I have a questino for you: If my reference monitor is a FSI OLED CM 250 and my client monitor is a LG OLED 65EF9500, Do I need to use the OLED Judd Modified or just keep the white point to OLED ?

Judd Modified is specific to the RGB OLEDs. If that display isn’t an RGB OLED then you don’t use Judd. Instead you use the normal white point.

Hi Patrick, thanks a lot for the series of insight on calibration. It would be beneficial if you can cover calibrating HDR monitors, both, for Dolby Vision and HDR10.

This is a really great guide! I can’t explain how useful this has been!

One question. I’m calibrating a monitor that can’t take a 3D LUT. So I’m putting the lut in resolve as a video monitor lut. As far as I can tell, there’s no way to then profile the display with that Lut applied. So I can’t measure how accurate or not the calibration has been.

Is there any way of doing this?

Thanks!

Calibrating a display without LUT support is coming up soon.

Hi Patrick, why wouldn’t you first optimise the display and create a 3d lut on top of that? Wouldn’t that give better results? Why not balance the rgb gain first and then let it create a 3d Lut? Do you also check for the contrast and brightness ajustment everytime you calibrate or once you’ve set those with the test images you’ll leave them? Also, do you only set contrast and brightness level with the test images or is there a more accurate way to set contrast and brightness?

Because the LUT is more accurate, doing the same thing as RGB balance but at a much more granular level.

RE: Setting Brightness – I always check it post-calibration, since the fixes that a calibration performs will effect your peak target. And the most accurate way to set peak whites is with test patches and a meter. Later in this series I talk about specialty test images that finds mismatches between Video / RGB settings in the image monitoring pipeline.

But if you put the display with rgb controls in the ballpark of where it needs to be, for instance like you did with the 2 point calibration on the Sony PVM, doesn’t the 3dlut have “less work” to do and isn’t that better? I don’t mean to come off arrogant, I’m really new to calibration and am just questioning this because I really want to understand it.