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Forum: Display Calibration   09-14-2014, 12:56 AM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
Chad, you know I have given this some additional...

Chad, you know I have given this some additional thought, and this is not really a bug so much as a design choice that I wanted to explain to help make it clear to myself at least. The gamut selector...
Forum: Display Calibration   09-13-2014, 10:17 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
This bug has been tested and verified. The ACM...

This bug has been tested and verified. The ACM module should not change when the reference gamut is set to 75% of Rec. 709. Although perhaps you can appreciate how this bug would occur, because the...
Forum: Display Calibration   09-13-2014, 01:00 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
See this ...

See this
http://www.avsforum.com/forum/139-display-calibration/1174468-official-chromapure-thread.html#post27105769
Forum: Display Calibration   09-12-2014, 02:13 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
European users need to set the PC to use periods...

European users need to set the PC to use periods for a decimal points and commas for list separators.
In Windows 7 you do this in Control Panel, Region and Language, Additional Settings
Select a...
Forum: Display Calibration   09-11-2014, 11:15 PM
Replies: 39
Views: 987
Posted By TomHuffman
As the previous post points out, the only...

As the previous post points out, the only meaningful ways in which a test pattern would conform to the Rec. 2020 standard:



bit-depth (10-bits minimum)
resolution (3840 x 2160 minimum)
the...
Forum: Display Calibration   09-08-2014, 06:03 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
I am running it on a 1600 x 900 17" display on my...

I am running it on a 1600 x 900 17" display on my laptop and it is fine. It would also be fine on a 1920 x 1080 display if the monitor were large enough, say in the 20"+ range. Currently, as far as I...
Forum: Display Calibration   09-07-2014, 08:50 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
ChromaPure is designed to work at 100% text size...

ChromaPure is designed to work at 100% text size @ the display's native resolution.
Forum: Display Calibration   09-07-2014, 08:47 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
You are mixing up intensity with saturation. 75%...

You are mixing up intensity with saturation. 75% of Rec. 709 is a gamut that is 75% the saturation of the HD gamut. Thus, the pri/sec colors are closer to the white point.

75% intensity has the...
Forum: Display Calibration   09-07-2014, 12:40 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
It sounds to me that either your video card or...

It sounds to me that either your video card or Windows in Parallels does not support the display's native resolution.
Forum: Display Calibration   09-07-2014, 12:38 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
In Windows 8.1 it is Control Panel, Display ...

In Windows 8.1 it is
Control Panel, Display
Check "Let me choose one scaling level for all my displays"
Select "Smaller - 100%"
Click Apply.

As long as you have the video card set to display...
Forum: Display Calibration   09-07-2014, 10:10 AM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
First, ensure that the laptop screen is set to...

First, ensure that the laptop screen is set to its native resolution. Second, click Control Panel, Display, and then Select "Smaller - 100%" (default). Click Apply.
Forum: Display Calibration   09-06-2014, 04:14 AM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
There's nothing wrong with the disc. This just...

There's nothing wrong with the disc. This just means that the display has a black level so low that your meter can't read it. You may also have one of those displays that goes totally black when a 0%...
Forum: Display Calibration   09-05-2014, 02:19 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
This must be some weird hardware issue. I just...

This must be some weird hardware issue. I just tested it on a Panasonic Blu-ray player and 0% appeared just where it was supposed to--at the beginning of the grayscale group of test patterns.
Forum: Display Calibration   09-05-2014, 02:32 AM
Replies: 3
Views: 280
Posted By TomHuffman
Without giving this a whole lot of thought, I...

Without giving this a whole lot of thought, I would think that any single-pixel test pattern would do--a crosshatch for example. A multiburst would offer several different single-pixel resolutions to...
Forum: Display Calibration   09-05-2014, 02:27 AM
Replies: 11
Views: 552
Posted By TomHuffman
People vary in their sensitivity to color...

People vary in their sensitivity to color inaccuracy. I am very sensitive to it. However, good white balance is a necessary component of and prerequisite for color accuracy.
Forum: Display Calibration   09-05-2014, 02:24 AM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
This is really Samsung-specific information I...

This is really Samsung-specific information I have from a lot of experience in the field. I am happy to share this with ChromaPure users here and elsewhere. It is not really appropriate information...
Forum: Display Calibration   09-05-2014, 02:15 AM
Replies: 178
Views: 6,427
Posted By TomHuffman
Meter-to-meter varitation is as big a problem, if...

Meter-to-meter varitation is as big a problem, if not bigger, than variations in displays, which can be largely accounted for by using a sufficient variety of profiles.
Forum: Display Calibration   09-04-2014, 12:34 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
You can use the 10-pt grayscale adjustments for...

You can use the 10-pt grayscale adjustments for gamma as well. Just adjust the G component at the necessary amount at the desired levels. This will raise or lower the luminance at that level. Once...
Forum: Display Calibration   09-03-2014, 11:06 AM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
The link to that post is here...

The link to that post is here (http://www.avsforum.com/forum/139-display-calibration/1174468-official-chromapure-thread-2.html#post26848385).

Looking at it again, I honestly don't know why I told...
Forum: Display Calibration   08-29-2014, 04:42 AM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
This issue is about white balance, not the color...

This issue is about white balance, not the color gamut. It is not that x0.3127, y0.329 are intrinsically incorrect for Sony OLEDs, rather it is that the 1931 standard observer equations used to...
Forum: Display Calibration   08-27-2014, 01:57 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
To provide some perspective, the result of your...

To provide some perspective, the result of your 729-color calibration is an average dE of 0.6, with over 90% of the colors below a dE of 1.0. This is just about as good as it gets. You are focusing...
Forum: Display Calibration   08-27-2014, 01:47 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
We can provide the disc as a digital download on...

We can provide the disc as a digital download on request so long as you have the ability to burn Blu-rays from an iso image. Yes, ChromaPure works well with this meter. I don't know how anyone other...
Forum: Display Calibration   08-26-2014, 05:13 AM
Replies: 178
Views: 6,427
Posted By TomHuffman
ChromaPure uses the four-color correction method...

ChromaPure uses the four-color correction method developed by NIST. This uses xyz, which is not the same as XYZ. xyz is the standard xy coordinates and z is 1-(x+y).
Forum: Display Calibration   08-24-2014, 05:22 PM
Replies: 5,749
Views: 454,586
Posted By TomHuffman
Lower the display's main Color control. You'll...

Lower the display's main Color control. You'll then have to use the Radiance controls to raise luminance elsewhere as appropriate.
Forum: Display Calibration   08-24-2014, 04:28 AM
Replies: 178
Views: 6,427
Posted By TomHuffman
I am a little puzzled by the discussion of...

I am a little puzzled by the discussion of degrees of success with respect to meter profiling. The 4-color NIST technique is a purely mathematical calculation which, if implemented correctly, will...
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