Home › Forums › Help and Support › Strange color gamut
- This topic has 6 replies, 2 voices, and was last updated 7 years ago by Steve Smith.
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2017-03-27 at 7:36 #6448
Hi Florian
I have attached an image of a gamut view of my latest calibration\profile and it appears strange to me… It was done on an HDTV with a wide color gamut (supposedly 94% 0f the DCI-P3 colorspace) … But I’ve never seen a gamut outline like this before. Seems very irregular and all over the place. Not what I’d expect from a tv of this caliber.
Is this normal? Or do you think that it might have been caused by my adjusting the CMS controls? – (Which were calibrated with Calman to a very low DE).
Do I need to calibrate\profile differently with DisplayCal with a wider color gamut display..ie, do I need to set the gamut to something other than sRGB colorspace? … But I don’t see a choice for DCI-P3 in your drop-downs if this is the case.
The verification report looks pretty good when I do things the default way…But I have a suspicion that I’m doing something wrong here.
What do you think? … Thanks.
- This topic was modified 7 years, 1 month ago by Steve Smith.
- This topic was modified 7 years, 1 month ago by Steve Smith.
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You must be logged in to view attached files.2017-03-27 at 12:35 #6452I have attached an image of a gamut view of my latest calibration\profile and it appears strange to me… It was done on an HDTV with a wide color gamut (supposedly 94% 0f the DCI-P3 colorspace)
This looks like the TV was profiled in a Rec. 709 gamut emulation mode.
do you think that it might have been caused by my adjusting the CMS controls? – (Which were calibrated with Calman to a very low DE).
What was the target in CalMAN? DCI-P3? Looks like Rec. 709, which would explain why the gamut is about the same.
Do I need to calibrate\profile differently with DisplayCal with a wider color gamut display..ie, do I need to set the gamut to something other than sRGB colorspace?
That’s a choice you potentially make in the setup of the TV, not DisplayCAL (unless you create a 3D LUT or are creating perceptual/saturation table for a specific source profile CIECAM02 gamut mapping). It is usually a good idea to use the native TV gamut in any case.
2017-03-27 at 18:00 #6455I did calibrate using REC709 in Calman because I didn’t see an option for DCI-P3… Do you know if DCI-P3 can be labeled under a different name? (Maybe REC BT 2020 HD, or SD)
What should I use?
Also, if I choose ‘Native’ on the TV’s colorspace control, then I loose the 10 point grayscale and CMS adjustments ability.
2017-03-28 at 19:30 #6461Do you know if DCI-P3 can be labeled under a different name?
SMPTE 431-2 is the name of the official standard.
Also, if I choose ‘Native’ on the TV’s colorspace control, then I loose the 10 point grayscale and CMS adjustments ability.
If you’re creating a 3D LUT that doesn’t really matter though.
2017-03-28 at 19:36 #6462Is ‘D65, SMPTE C’ equal to DCI-P3?
2017-03-28 at 19:46 #6464Is ‘D65, SMPTE C’ equal to DCI-P3?
Not even close. That’s the NTSC SD color standard.
2017-03-30 at 2:45 #6493Wow Florian, were you ever right!! … I calibrated my Samsung HDTV set to ‘Native’ for the colorspace and turned off the CMS and 10 point white balance controls… I used DisplayCAL to set the ‘RGB high’ and presto! Fantastic calibration! Unbelievable natural and dynamically expansive color palette. 🙂
Please tell all your Samsung users that ‘Native’ is the way to go for sure! … No question. What a beautiful picture! (Very important to get brightness and contrast right first. 45 and 95 respectively on every Samsung I’ve ever owned. I suppose that’s why these numbers are the defaults! Lol.)
As usual, the simplest answer if often the correct one. Just let DisplayCAL do all the work.
Thanks.
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