HCFR - Open source projector and display calibration software - Page 158 - AVS Forum
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post #4711 of 4718 Old Yesterday, 01:20 AM
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Originally Posted by LastButNotLeast View Post
Very nice. Turn off the individual colors (right click) since they don`t mean anything anyway.
The colors could go separate ways while gray would still be ok.
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post #4712 of 4718 Old Today, 07:36 AM
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I got the contrast and brightness set, the gamma is pretty steady at 2.2, the color temp scale says I'm right about 6500 but this is the best that I could get the RGB to line up, I could get some areas closer but then it throws both ends way out of wack. Is this "good enough" or am I way off?


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post #4713 of 4718 Old Today, 07:59 AM
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Originally Posted by nebrunner View Post
I got the contrast and brightness set, the gamma is pretty steady at 2.2, the color temp scale says I'm right about 6500 but this is the best that I could get the RGB to line up, I could get some areas closer but then it throws both ends way out of wack. Is this "good enough" or am I way off?
Not bad. But it looks like your blue and red are clipping out at 100% white resulting in the color shift at 100% white. You might want to try lowering your Green setting for 100IRE and redo the entire process. You will likely find that in that case you would be able to better track red and blue with green all the way to 100IRE. I also wouldn't worry about largish differences in RGB at 10%IRE or lower.
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post #4714 of 4718 Old Today, 08:44 AM
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Originally Posted by HDTVChallenged View Post
Furthermore, proper technique should allow you to avoid any potential pitfalls. Note that the pattern is titled "Pre-Calibration Tools" at which point you're only concerned with contrast and black levels ... I don't know what else (color wise) you could adjust to "fix" a clipping problem here especially for Y,C or M.
There cases where you need to reduce the color slider to prevent clipping of RGBCMY colors the same time that you have no problem for White clipping or it's needed to reduce further the contrast slider to prevent clipping of RGBCMY color bars.

Ted's LightSpace CMS Calibration Disk Free Version for Free Calibration Software: LightSpace DPS + CalMAN ColorChecker
S/W: LightSpace CMS, SpaceMan ICC, SpaceMatch DCM, CalMAN 5, CalMAN RGB, ChromaPure, CalPC, ControlCAL
Meters: JETI Specbos 1211, Klein K-10A, i1PRO2, i1PRO, SpectraCAL C6, i1D3, C5

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post #4715 of 4718 Old Today, 10:41 AM
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Originally Posted by ConnecTEDDD View Post
There cases where you need to reduce the color slider to prevent clipping of RGBCMY colors the same time that you have no problem for White clipping or it's needed to reduce further the contrast slider to prevent clipping of RGBCMY color bars.
Sure, absolutely, 100% correct. There's still a pattern on the GCD disk that does the same thing.

Furthermore, on the basic AVS-HD flashing bar "contrast pattern," all one needs to do is make sure the flashing bars are not "discolored" compared to the white background that is recorded at 254 (or perhaps even 255.) The human eye is very good at this task (assuming normal color vision, of course.)

Your pattern certainly helps removes any doubt, but it's not absolutely "necessary."
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post #4716 of 4718 Old Today, 11:40 AM
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Originally Posted by HDTVChallenged View Post
Your pattern certainly helps removes any doubt, but it's not absolutely "necessary."
This reminds me from watching the Steve 'Jobs' film the other night.

“Everything is important- that success is in the details.”

― Steve Jobs
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post #4717 of 4718 Old Today, 11:48 AM
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Quote:
Originally Posted by HDTVChallenged View Post
Furthermore, on the basic AVS-HD flashing bar "contrast pattern," all one needs to do is make sure the flashing bars are not "discolored" compared to the white background that is recorded at 254 (or perhaps even 255.)
I haven't used to my any disk pattern the levels 255 (and 0 also) because these levels are reserved for synchronization data.

Levels 1 to 254 are available for video.


Ted's LightSpace CMS Calibration Disk Free Version for Free Calibration Software: LightSpace DPS + CalMAN ColorChecker
S/W: LightSpace CMS, SpaceMan ICC, SpaceMatch DCM, CalMAN 5, CalMAN RGB, ChromaPure, CalPC, ControlCAL
Meters: JETI Specbos 1211, Klein K-10A, i1PRO2, i1PRO, SpectraCAL C6, i1D3, C5
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post #4718 of 4718 Old Today, 12:17 PM
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Reading this thread always makes me want to calibrate my display again, but at the same time makes me afraid to do so.

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