Even out luminance errors on Pioneer G9 - AVS Forum
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post #1 of 9 Old 03-26-2012, 02:06 PM - Thread Starter
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Hi,

I am currently calibrating a Euro KRP-600m and have a high luminance issue with blue and ask is it possible to even out luminance errors?

If i lower the main colour control to try and correct blue then magneta becomes a problem, however other colours gain a lower dE.

What would be the best way to balance the levels?

Thanks.
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post #2 of 9 Old 03-27-2012, 12:18 PM
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What meter are you using? I have never seen a Kuro have issues mojor issues with blue luminance.

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Originally Posted by -Hitman- View Post

Hi,

I am currently calibrating a Euro KRP-600m and have a high luminance issue with blue and ask is it possible to even out luminance errors?

If i lower the main colour control to try and correct blue then magneta becomes a problem, however other colours gain a lower dE.

What would be the best way to balance the levels?

Thanks.



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post #3 of 9 Old 03-27-2012, 12:44 PM - Thread Starter
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I'm using a band new i1pro.

Settings and readings are below if you don't mind having a look please...

100% Y 30fl target
1080p@24 REC709 (panel set to input 4:4:4)
Source - Sony s760 (1080P24 4:4:4)
100% stim

Con 24
Bri 1
Col 6
Tint 0
Colorspace 2
Gamma 1-9 (all 0)

CMS
R -2
Y 0
G -2 (set as created best greyscale baseline to adjust RB to fit)
C -2
B 0
M -1

R-H -2
G-H -1 (required to fine tune greyscale)
B-H 8
R-L 0
G-L 1 (required to fine tune greyscale)
B-L -3

Calman details





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post #4 of 9 Old 03-27-2012, 02:37 PM - Thread Starter
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I'm going to take another reading tomorrow as i don't think the white measurement is correct, should be the same as 100w.
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post #5 of 9 Old 03-27-2012, 02:54 PM
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The only observation I can make is that the panel is pretty dim overall.

It could be that the blue reading is starting to get into the range where the i1 Pro readings are less reliable.

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post #6 of 9 Old 03-27-2012, 03:17 PM
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take your color control down a couple of clicks while focusing on getting red Delta L at zero. This will also improve your blue Delta values.

You will then be finished.

good work.

PS: might also be a good thing to center your CMS controls (and leave them there), then re adjust your gray scale.

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post #7 of 9 Old 03-27-2012, 03:32 PM - Thread Starter
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Thanks all for the replys, appreciated.

I will try your suggestions Gregg and report back, thanks.

I have noticed this occuring with another users measurements posted over at Contolcal, he used HCFR for which i also have data from the same calibration time as above, the Gamut readings are almost identical.
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post #8 of 9 Old 03-27-2012, 04:35 PM
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Quote:
Originally Posted by -Hitman- View Post

I'm using a band new i1pro.

Settings and readings are below if you don't mind having a look please...

100% Y 30fl target
1080p@24 REC709 (panel set to input 4:4:4)
Source - Sony s760 (1080P24 4:4:4)
100% stim

Con 24
Bri 1
Col 6
Tint 0
Colorspace 2
Gamma 1-9 (all 0)

CMS
R -2
Y 0
G -2 (set as created best greyscale baseline to adjust RB to fit)
C -2
B 0
M -1

R-H -2
G-H -1 (required to fine tune greyscale)
B-H 8
R-L 0
G-L 1 (required to fine tune greyscale)
B-L -3

Calman details

Now everything is in context. Compared to the five other colors, blue stands out as the highest, yet is right at dE 3. That is normal on the Kuro. Nice combo on the CMS. As has been pointed out, you may get better tracking by setting those controls at zero, but that is not an absolute. Some of the Kuros require CMS settings similar to yours so your numbers are ok if you find no real improvement by resetting your CMS values to zero. You color setting is also fine. No need to change that setting.... unless you drop it by 1 click.


BTW, Kuros perform best with an RGB 16-235 signal. Unless your Sony is incapable of properly sending that type of signal to the display, I recommend you use it.


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post #9 of 9 Old 03-27-2012, 11:33 PM - Thread Starter
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Thanks D-nice,

yes the Sony can do rgb i will look into using that setting and try the suggestions.
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