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Color Calibration Help regarding RGB (Video Level)

 
This forum is locked: you cannot post, reply to, or edit topics.   This topic is locked: you cannot edit posts or make replies.    CurtPalme.com Forum Index -> Audio & Video Calibration
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Afghaniman



Joined: 24 Nov 2009
Posts: 2


Posted: Tue Nov 24, 2009 5:58 pm    Post subject: Color Calibration Help regarding RGB (Video Level)

I'm having a little difficulty understanding what I should do regarding my attempts to calibrate color on my display.

I have an Oppo 983, coupled with a Samsung PN42A450 display, connected via HDMI and upscaled to 720p resolution. If I feed YCbCr from the player to the TV at HD resolutions, my display seems to fail the colorspace conversion (I get a large error in green luminance when switching from SD 480p to HD 720p/1080, virtually decreases by almost 30%). My other alternative is to feed the display RBG Video Level from the player, where I don't receive the luminance errors. My question is what do I now do regarding color calibration of the display?

What color standard to I calibrate to? I've read on numerous occasions where people say "RGB is RGB", but what does that mean exactly? I think they were implying that I should not be able to adjust color, as the player is now doing the decoding (as is the case when I hook up a PC via VGA; I cannot adjust the color on the display). In this instance, however, it still allows me to do so; the three choices being Auto, Native, and Samsung's CMS controls. Obviously I would prefer to use the later, but I do not know what color standard I should be calibrating to for reference.

If I go back to feeding YCbCr to the display, could I compensate for the display's failed colorspace conversion utilizing Samsung's CMS controls, or would color be borked no matter what I do? The settings are kinda extreme (Green luminance slider having to be pushed to 88, on a scale of 0 to a 100!), but it seems possible.

I would appreciate any help provided.
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akajester



Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin

Posted: Tue Nov 24, 2009 7:38 pm    Post subject:

You'd need a colorimeter to measure the display and you'd shoot for 6500k on whatever input allows you proper adjustments. Have you checked out Kal's guide? excellent info.
https://www.curtpalme.com/forum_archived/viewtopic.php@t=10457.html

-akajester
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Afghaniman



Joined: 24 Nov 2009
Posts: 2


Posted: Tue Nov 24, 2009 11:03 pm    Post subject:

akajester wrote:
You'd need a colorimeter to measure the display and you'd shoot for 6500k on whatever input allows you proper adjustments. Have you checked out Kal's guide? excellent info.
https://www.curtpalme.com/forum_archived/viewtopic.php@t=10457.html

-akajester


Thanks for your reply. My apologies for the lack of clarification; grayscale has already been adjusted (thanks to Kal's great guide) utilizing an i1 Display sensor.

My issues solely lie in the realm of color, particularly with what is going on when the player is feeding RGB Video to the display.
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