Problem with blue CMS - AVS Forum
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post #1 of 12 Old 01-11-2013, 12:15 PM - Thread Starter
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Hi,
I got big problems with Blue Saturation in my CMS calibration.
I calibrat it with 75%.
Take a look at the pictures below.

Shod I calibrate it with 100% CMS or what shod I do?

Blue:


CMS Complite:




Grey Scale:



I Use:
i1pro
SpectraCal c6
CalMan v5
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post #2 of 12 Old 01-11-2013, 12:49 PM
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Looks like your Blue has too much green in it, but that's just an issue with your display.

Their really isn't anything you can do to fix that, you can't take green out, or increase the native saturation.

You might be able to get it a hair closer by tweaking the hue.

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post #3 of 12 Old 01-11-2013, 01:35 PM - Thread Starter
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Quote:
Originally Posted by sotti View Post

Looks like your Blue has too much green in it, but that's just an issue with your display.

Their really isn't anything you can do to fix that, you can't take green out, or increase the native saturation.

You might be able to get it a hair closer by tweaking the hue.

Okej, I did see that the green was going grazy, it's the same with Magneta but it's much better.

Shod I calibrate it with 100% color with CMS or shod I just stay with 75% color CMS?
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post #4 of 12 Old 01-11-2013, 02:12 PM
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Staying at 75% luminance is probably best.

If you can calibrate at 75% luminance and 75% saturation, you might have a better idea of how the display is performing with real content.

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post #5 of 12 Old 01-11-2013, 03:36 PM
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Note that if you're using the AVSHD709 disc, the 75% Color patterns are 75% luminance / 100% saturation. GCD has more patterns for color gamut, like 75% luminance / 75% saturation.
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post #6 of 12 Old 01-12-2013, 03:29 AM - Thread Starter
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Quote:
Originally Posted by rahzel View Post

Note that if you're using the AVSHD709 disc, the 75% Color patterns are 75% luminance / 100% saturation. GCD has more patterns for color gamut, like 75% luminance / 75% saturation.

I don't really understand.

I use AVSHD709 75% color pattern and have tuned CalMan to 75%.

Whats GCD? Shod I use an other pattern?
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post #7 of 12 Old 01-12-2013, 05:53 AM
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Quote:
Originally Posted by Calby View Post

I don't really understand.

I use AVSHD709 75% color pattern and have tuned CalMan to 75%.

Whats GCD? Shod I use an other pattern?

Gamut Calibration Disk.
Personally I wouldnt worry about it - id be more concerned that the 25,50 and 75% saturation points were as accurate as possible. Using this approach on my Panasonic VT30 results in a wider colour space at 100%, but a better looking picture. You can do this by using both the AVS HD and the GCD disk. Both have 25% intervalled saturation patterns.

Benq W1080ST Projector, Panasonic TXP55VT30 plasma, Yamaha RXA3020 AVR, Denon DVD-2500BT, Q Acoustics 1010i in 7.1, i1 Pro spectro, i1 Display Pro, Calman 5 Enthusiast, PS3, Xbox 360, Wii

Calibration Management Disc
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post #8 of 12 Old 01-12-2013, 07:02 AM - Thread Starter
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Quote:
Originally Posted by ndaa75 View Post

Gamut Calibration Disk.
Personally I wouldnt worry about it - id be more concerned that the 25,50 and 75% saturation points were as accurate as possible. Using this approach on my Panasonic VT30 results in a wider colour space at 100%, but a better looking picture. You can do this by using both the AVS HD and the GCD disk. Both have 25% intervalled saturation patterns.


Do you have any link to GCD?

So it's accurate to calibrate 75% with AVCHD790?

I can't find 25, 50% pattern at the AVCHD disc.

I got the bluray version.



AVCHD709 dont have 25 or 50% color:
Quote:
2) No patterns are included for items such as audio synchronization, motion resolution, noise reduction, or 50% and 25% colors. At this time no further revisions are planned, yet users may contribute items to the project they consider possibly useful additions.



Is it better to calibrate CMS with 75% luminance / 75% Saturation with GCD or is it better to calibrate CMS with AVCHD709 with 75% luminance / 100% Saturation?
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post #9 of 12 Old 01-12-2013, 10:23 AM
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Quote:
Originally Posted by Calby View Post

Do you have any link to GCD?

So it's accurate to calibrate 75% with AVCHD790?

I can't find 25, 50% pattern at the AVCHD disc.

I got the bluray version.



AVCHD709 dont have 25 or 50% color:
Is it better to calibrate CMS with 75% luminance / 75% Saturation with GCD or is it better to calibrate CMS with AVCHD709 with 75% luminance / 100% Saturation?


If saturation is out at 25, 50 and 75% then it is best to calibrate using the GCD patterns of 75%amplitude/75%saturation .Amplitude and luminance mean the same thing. It's just that the GCD pattern is using amplitude. End result will be a much more accurate tracking of the color gamut but 100% saturation will be oversaturated and not accurate. So it's a trade off either way. Most of the content lies in the 25-75% saturation range.
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post #10 of 12 Old 01-12-2013, 11:02 AM - Thread Starter
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Quote:
Originally Posted by hungro View Post

If saturation is out at 25, 50 and 75% then it is best to calibrate using the GCD patterns of 75%amplitude/75%saturation .Amplitude and luminance mean the same thing. It's just that the GCD pattern is using amplitude. End result will be a much more accurate tracking of the color gamut but 100% saturation will be oversaturated and not accurate. So it's a trade off either way. Most of the content lies in the 25-75% saturation range.


Okej,
So I can continue to calibrate 75% with AVCHD709 disc, and then check with GCD if 25% and 50% if it's fine.
IF it's out I'll calibrate with GCD 75% sautration / 75% lumiance pattern.
If it's OK I leave it.

Is that right?
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post #11 of 12 Old 01-13-2013, 08:11 AM
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Oh boy. I forget . But don't mix and match the patterns from the two disks. The window sizes are different for the two . Perhaps someone else could explain better on how to go about. I got this email from Zoyd he is well knowlegeable in these matters smile.gif


The GCD disk has saturation tracking sequences at 3 luminance levels. I would run the one at 75% luminance, measure each saturation level (0, 25, 50, 75, 100) and compare to targets. Calibrating at 75%a/75%s will probably give you better overall color (lower errors) in the interior of the gamut where it's more important. I use the 24 color checker patterns as a metric and don't pay much attention to the tracking graphs.
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post #12 of 12 Old 01-13-2013, 08:44 AM - Thread Starter
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So then I just do this:

only use GDC calibrate 75% color.


AVCHD709 dont have 25, 50% patterns so that disc 'll I don't use.
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