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The Official ChromaPure thread - Page 141

post #4201 of 5355
Before running CP I checked for clipping using Spears & Munsil, what I noticed is if I set my jvc 350 to the recommend HDMI 'Standard' setting I suffer from clipping, what ever I do I cannot shift this, set it to 'Enhanced' and everything is fine. I am using an Oppo 93, this is set to Direct output.

Could there, is there a setting the my Duo needs to be set to overcome this?
post #4202 of 5355
Quote:
Originally Posted by magicj1 View Post

Before running CP I checked for clipping using Spears & Munsil, what I noticed is if I set my jvc 350 to the recommend HDMI 'Standard' setting I suffer from clipping, what ever I do I cannot shift this, set it to 'Enhanced' and everything is fine. I am using an Oppo 93, this is set to Direct output.

Could there, is there a setting the my Duo needs to be set to overcome this?
So why not leave it at "Enhanced"?
post #4203 of 5355
Quote:
Originally Posted by davehancock View Post

So why not leave it at "Enhanced"?

Using the AVS HD 709 to set the Brightness and Contrast, I found the picture to be too dark, this was especially apparent when watching 't'he Dark night rises' the other day, so I reverted back to Standard HDMI and used the Cal settings I had for this before I got the Oppo.
post #4204 of 5355
Quote:
Originally Posted by magicj1 View Post

Before running CP I checked for clipping using Spears & Munsil, what I noticed is if I set my jvc 350 to the recommend HDMI 'Standard' setting I suffer from clipping, what ever I do I cannot shift this, set it to 'Enhanced' and everything is fine. I am using an Oppo 93, this is set to Direct output.

Could there, is there a setting the my Duo needs to be set to overcome this?

Hi Will,

Normally you would reduce contrast on the Display but (as in my case) this does not work, reduce the 'Picture Controls > Contrast on the DUO whilst viewing 'Clipping Pattern' in S & M.

This works very well.
post #4205 of 5355
Has anyone been successful in updating the software on their Accupel DVG-5000?

I have installed the drivers

Downloaded the Update program

When I start the program it shows Connected as True but it won't verify the ID or Version.

I have tried it on 3 separate computers, Win 8, Win 7 and Win XP. all the same results.

I followed Tom's post buried in this thread about the driver and still did not work.
post #4206 of 5355
Quote:
Originally Posted by Cactus Jack View Post

Has anyone been successful in updating the software on their Accupel DVG-5000?

I have installed the drivers

Downloaded the Update program

When I start the program it shows Connected as True but it won't verify the ID or Version.

I have tried it on 3 separate computers, Win 8, Win 7 and Win XP. all the same results.

I followed Tom's post buried in this thread about the driver and still did not work.
You first have to go into the AccuPel on screen display menu and set the default baud rate to 115200. Recycle the unit, and then do the update. After the update is complete, reset it to 9600.
post #4207 of 5355
Quote:
Originally Posted by PE06MCG View Post

Hi Will,

Normally you would reduce contrast on the Display but (as in my case) this does not work, reduce the 'Picture Controls > Contrast on the DUO whilst viewing 'Clipping Pattern' in S & M.

This works very well.

thanks Peter, I will give this ago..... smile.gif
post #4208 of 5355
Quote:
Originally Posted by buzzard767 View Post

The Accupel is putting out some incorrect signals in the Color module. These with 8 bit RGB.

OK, I am able to confirm one bug. At 75% intensity, the 75% of Rec. 709 white is at PC level (764), but the ACM white is at video level (720). Video is correct. 100% intensity, both are at video level (940). That would explain the difference in relative luminance of red you see between the two modules. However, the bigger problem you see, which is lower saturation in ACM than in 75% of Rec. 709 (which would not be affected by the white level discrepancy) I still do not see, either at 100% or 75% intensity.

ACM 100% intensity, 75% saturation


Color Management 100% intensity 75% of Rec. 709


ACM 75% intensity, 75% saturation


Color Management 75% intensity 75% of Rec. 709


BTW, bugs like this are not AccuPel issues, they are CP programming errors. We are just sending the wrong USB command for white in Color Management 75% intensity 75% of Rec. 709.

One further point: When testing this I am not merely taking measurements off the screen. I am also monitoring the signals sent from CP to the AccuPel using third-party software. There is nothing in the USB traffic to explain the loss in saturation you seem to be measuring in ACM, so I am at a loss to explain this.
Edited by TomHuffman - 4/23/13 at 11:50pm
post #4209 of 5355
Quote:
Originally Posted by magicj1 View Post

when you 'Test Device' which brings up the Red test pattern, how can you exit this without switching off the Duo?
Push the Test Pattern button on the Duo's remote.
post #4210 of 5355
Quote:
Originally Posted by magicj1 View Post

Before running CP I checked for clipping using Spears & Munsil, what I noticed is if I set my jvc 350 to the recommend HDMI 'Standard' setting I suffer from clipping, what ever I do I cannot shift this, set it to 'Enhanced' and everything is fine. I am using an Oppo 93, this is set to Direct output.

Could there, is there a setting the my Duo needs to be set to overcome this?
You can lower the Color setting in the Duo, but I am not sure that I would recommend this. It will likely have more of a negative visual effect than whatever is gained from the reduction of clipping at very high levels that almost never occur in actual programming in any case.
post #4211 of 5355
Quote:
Originally Posted by JimP View Post

Are you also checking the output of the Accupel to be sure that it's somehow not sending out the signal requested by the incoming usb command?
This has been tested independently recently. The output is spot on. Of the many things that may be causing this, that is by far the least likely option. BTW, this is easy to test. Do you see the same thing? Measure red at 75% saturation in the ACM and the Color Management modules at 75% intensity.

BTW, I should have mentioned, that the Intensity drop-down in ACM overrides whatever you selected in the signal generator setup, but only for that module.
post #4212 of 5355
Just checking, to calibrate to 75% Amp / 75% Saturation on my VT50 I need to select 75% Rec 709 in the color module, correct? It looks like it moves them in perfectly from Rec 709, just wanna make sure.
post #4213 of 5355
Quote:
Originally Posted by gadgtfreek View Post

Just checking, to calibrate to 75% Amp / 75% Saturation on my VT50 I need to select 75% Rec 709 in the color module, correct? It looks like it moves them in perfectly from Rec 709, just wanna make sure.
Yes, and you need to select 75% intensity in the signal generator setup screen.
post #4214 of 5355
Tom, the generator setting shouldn't matter if I am using a bluray player and patter disc, correct?
post #4215 of 5355
Quote:
Originally Posted by gadgtfreek View Post

Tom, the generator setting shouldn't matter if I am using a bluray player and patter disc, correct?
No, it doesn't. I thought you were using an external generator.
post #4216 of 5355
Cool, thanks.
post #4217 of 5355
Quote:
Originally Posted by JimP View Post

So if you're using an external disc as a signal source and are using patterns that are 75% saturation and 75% intensity in the color management module, you select 75% of 709, does it assume 100% brightness and is giving you reading based on that? Don't quite get how it knows that you're using 75% intensity patterns.
It doesn't assume anything about luminance, only 75% saturation.
post #4218 of 5355
If you look at the chart, when you choose 75% Rec 709 it just moves the targets in from the 100% saturation points to the 75% points. Some displays benefit from a 75% saturation calibration, but usually folks will calibrate with 75% amplitude 100% saturation. The VT50 ends up better if you can calibrate your 75% saturation points with the CMS controls. The 100% saturation targets are a little off, but 25% and 50% are very good when you run the advanced CM chart.
post #4219 of 5355
Quote:
Originally Posted by gadgtfreek View Post

The VT50 ends up better if you can calibrate your 75% saturation points with the CMS controls. The 100% saturation targets are a little off, but 25% and 50% are very good when you run the advanced CM chart.
My favorite plasma right now is the ST60. It is less expensive than the VT series and the performance is astonishingly good, even with no CMS.

Here are ACM reports at both 100% and 75% intensity. They both look great with no color adjustments having been made, except selecting the best preset and grayscale/levels calibration.

AdvancedColorManagementReport075.pdf 143k .pdf file

AdvancedColorManagementReport100.pdf 143k .pdf file
post #4220 of 5355
Man those are good. It takes a little bit of work to get the vt50 there. That's almost like thx mode accuracy but on a ST model. Very cool.
post #4221 of 5355
Here is my vt50 result from tonight with 75 saturation and 75 intensity.

VT50Gamut75Amp75SatPatterns042413_zpsf5d6e299.jpg
post #4222 of 5355
Quote:
Originally Posted by TomHuffman View Post

My favorite plasma right now is the ST60. It is less expensive than the VT series and the performance is astonishingly good, even with no CMS.

Here are ACM reports at both 100% and 75% intensity. They both look great with no color adjustments having been made, except selecting the best preset and grayscale/levels calibration.

AdvancedColorManagementReport075.pdf 143k .pdf file

AdvancedColorManagementReport100.pdf 143k .pdf file
Hello,

What kind of patterns did you use to calibrate the ST60 ?
Windows ? (which size?) APL ?

Thank you.
post #4223 of 5355
Quote:
Originally Posted by mlg33 View Post

Hello,

What kind of patterns did you use to calibrate the ST60 ?
Windows ? (which size?) APL ?

Thank you.
Standard 10% AccuPel windows.
post #4224 of 5355
Quote:
Originally Posted by TomHuffman View Post

OK, I am able to confirm one bug. At 75% intensity, the 75% of Rec. 709 white is at PC level (764), but the ACM white is at video level (720). Video is correct. 100% intensity, both are at video level (940). That would explain the difference in relative luminance of red you see between the two modules. However, the bigger problem you see, which is lower saturation in ACM than in 75% of Rec. 709 (which would not be affected by the white level discrepancy) I still do not see, either at 100% or 75% intensity.


BTW, bugs like this are not AccuPel issues, they are CP programming errors. We are just sending the wrong USB command for white in Color Management 75% intensity 75% of Rec. 709.

One further point: When testing this I am not merely taking measurements off the screen. I am also monitoring the signals sent from CP to the AccuPel using third-party software. There is nothing in the USB traffic to explain the loss in saturation you seem to be measuring in ACM, so I am at a loss to explain this.

I just took some more measurements. Is there such a thing as an Accupel reset? All I know is until something changes I can no longer use the Accupel for calibrations.

The chart contains measurements from ChromaPure internal patterns which I have confirmed many times to be correct, Lumagen Radiance Mini patterns, and finally Accupel patterns, all full Field. Note that all y coordinates are within tolerance but the Accupel x coordinates are not.

post #4225 of 5355
Quote:
Originally Posted by mlg33 View Post

Hello,

What kind of patterns did you use to calibrate the ST60 ?
Windows ? (which size?) APL ?

Thank you.

FYI, I used 6.5 on my vt, then ran a pass with 10. Difference is miniscule.
post #4226 of 5355
Looking for a recommendation on 10% stimulus readings on my vt50. 20-100 are quite consistent but 10 can be quite erratic. Is that just the display and the meter capability (d3 pro) or would moving non contact and reading a larger error at 10 help in consistency? Or should I not even worry with 10?

I know one school of thought is do 30 and 80 2pt, then 20-100 with detailed adjustment and move on.
post #4227 of 5355
Quote:
Originally Posted by gadgtfreek View Post

If you look at the chart, when you choose 75% Rec 709 it just moves the targets in from the 100% saturation points to the 75% points. Some displays benefit from a 75% saturation calibration, but usually folks will calibrate with 75% amplitude 100% saturation. The VT50 ends up better if you can calibrate your 75% saturation points with the CMS controls. The 100% saturation targets are a little off, but 25% and 50% are very good when you run the advanced CM chart.

The same thing goes for the D series Samsungs. 75%a/75%s , the 100% is out but the rest line up better at 50%s and 25%s. Cheers smile.gif
post #4228 of 5355
Quote:
Originally Posted by buzzard767 View Post

I just took some more measurements. Is there such a thing as an Accupel reset? All I know is until something changes I can no longer use the Accupel for calibrations.

The chart contains measurements from ChromaPure internal patterns which I have confirmed many times to be correct, Lumagen Radiance Mini patterns, and finally Accupel patterns, all full Field. Note that all y coordinates are within tolerance but the Accupel x coordinates are not.

Buzz, let's continue this off line.
post #4229 of 5355
I think 10 % stimulus is very tough for the meter to get accurate it will get gamma correct but not color. The d3 pro is not sensitive enough at the low level of light. Most calibrators do 10% by eye instead including the pros. Perhaps someone else has a better answer, Tom?
post #4230 of 5355
Quote:
Originally Posted by hungro View Post

I think 10 % stimulus is very tough for the meter to get accurate it will get gamma correct but not color. The d3 pro is not sensitive enough at the low level of light. Most calibrators do 10% by eye instead including the pros. Perhaps someone else has a better answer, Tom?

Klein K10-A
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