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Search: Posts Made By: TomHuffman
Forum: Display Calibration   08-29-2015, 09:56 AM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
Although black is lower, I would leave it at the...

Although black is lower, I would leave it at the default value for BT.1886 purposes.
Forum: Display Calibration   08-28-2015, 02:36 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
Currently, yes.

Currently, yes.
Forum: Display Calibration   08-27-2015, 02:05 AM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
Yes, that's right. "We use the luminance element...

Yes, that's right. "We use the luminance element in dE calculations only for color. So, technically speaking we use uv for grayscale and Luv for color."
We treat color and grayscale/white balance...
Forum: Display Calibration   08-26-2015, 09:15 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
Yes, stimulus is the same as luminance/intensity....

Yes, stimulus is the same as luminance/intensity. Saturation is the distance from the white point independent of intensity. All else being equal, a color closer to the white point is less saturated...
Forum: Display Calibration   08-26-2015, 09:07 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
Ted, ChromaPure does not consider gamma when...

Ted, ChromaPure does not consider gamma when calculating dE values for white balance\grayscale.
Forum: Display Calibration   08-26-2015, 04:56 AM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
That's an impossible scenario. What if you are...

That's an impossible scenario. What if you are using different intensity test patterns? I wouldn't use Y correction in this case. Use the same values for test and reference.
Forum: Display Calibration   08-25-2015, 04:36 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
What values were input in the reference and field...

What values were input in the reference and field and what values did you measure before and after the correction?
Forum: Display Calibration   08-24-2015, 10:14 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
In general, I am reluctant to respond to...

In general, I am reluctant to respond to questions like the last two. I want to leave flexibility about what will or will not be in future releases. I will therefore treat these as feature requests.
Forum: Display Calibration   08-21-2015, 03:32 AM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
This problem is generally caused by Windows...

This problem is generally caused by Windows scaling the text. If the text isn't scaled and the app is being run in the monitor's native resolution I have never seen this occur before. Unfortunately,...
Forum: Display Calibration   08-20-2015, 04:43 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
What resolution is the panel? What resolution are...

What resolution is the panel? What resolution are you running Windows in?
Forum: Display Calibration   08-20-2015, 02:09 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
1. Close ChromaPure. 2. Right-click the...

1. Close ChromaPure.
2. Right-click the ChromaPure desktop icon, and select Properties.
3. Click the Compatibility tab, and then check "Disable display scaling on high DPI settings"
...
Forum: Display Calibration   08-19-2015, 05:57 PM
Replies: 48
Views: 971
Posted By TomHuffman
I was referring to the i1D3 and the i1Pro 2....

I was referring to the i1D3 and the i1Pro 2. Their maximum luminance specifications are 1000 cd/m2 and 1200 cd/m2, respectively.

Let's take an example of HDR content in which 100% video is 1000...
Forum: Display Calibration   08-19-2015, 12:48 PM
Replies: 48
Views: 971
Posted By TomHuffman
I'll go out on a limb and predict that Rec. 2020,...

I'll go out on a limb and predict that Rec. 2020, though support is required by the 4K Blu-ray standard, will not be the gamut in which 4K Blu-rays will be mastered. I think that DCi-P3 is more...
Forum: Display Calibration   08-19-2015, 02:56 AM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
It is corrected using the same JETI 1211 I used...

It is corrected using the same JETI 1211 I used in this experiment. A PRO meter is corrected using the same displays as were used in this test so on those displays the accuracy of the meter would be...
Forum: Display Calibration   08-18-2015, 06:37 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
You can use the spreadsheet that Ted references...

You can use the spreadsheet that Ted references or the Conversion Utility within ChromaPure.
Forum: Display Calibration   08-18-2015, 05:45 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
The reason I ask is that if the main difference...

The reason I ask is that if the main difference is luminance, then this methodology could be very misleading.

Why? dE is calculated using relative luminance only. Absolute luminance is...
Forum: Display Calibration   08-18-2015, 05:23 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
It looks to me that the main difference between...

It looks to me that the main difference between these image pairs is in luminance. Is that correct?
Forum: Display Calibration   08-18-2015, 04:51 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
One could compare raw colorimetric data. I didn't...

One could compare raw colorimetric data. I didn't do that for obvious business reasons.
Forum: Display Calibration   08-18-2015, 04:50 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
Quite so. This methodology was intentional for...

Quite so. This methodology was intentional for business reasons.
Forum: Display Calibration   08-18-2015, 04:49 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
No. 0.34 error is invisible.

No. 0.34 error is invisible.
Forum: Display Calibration   08-18-2015, 02:24 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
So, how accurate are these meters, anyway?

One of the most common questions I get is how accurate is my meter? By way of answering this question, I unpacked two factory fresh popular X-Rite meters, the i1D3 and the i1Pro 2. Next, I used each...
Forum: Display Calibration   08-17-2015, 01:40 AM
Replies: 1,941
Views: 531,736
Posted By TomHuffman
The original post is now more than eight years...

The original post is now more than eight years old and much has changed since then. In particular, I no longer use the ISP I did then, so the images I saved on their servers are gone.

If you will...
Forum: Display Calibration   08-16-2015, 10:26 PM
Replies: 6
Views: 314
Posted By TomHuffman
Just experiment with lower contrast settings.

Just experiment with lower contrast settings.
Forum: Display Calibration   08-11-2015, 05:52 PM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
I went back and remeasured in the DCI-P3 mode and...

I went back and remeasured in the DCI-P3 mode and I got a different result. This time I got a CIE94 value of 2.6, which is significantly higher than the 0.9 that I got before. The i1D3 had lower...
Forum: Display Calibration   08-10-2015, 02:00 AM
Replies: 6,797
Views: 529,403
Posted By TomHuffman
I don't know what is expected of this PJ. Check...

I don't know what is expected of this PJ. Check your black again to ensure that BT.1886 didn't elevate it.
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