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Search: Keyword(s): ; Posts Made By: TomHuffman
Forum: Display Calibration   09-28-2016, 06:23 AM
Replies: 357
Views: 12,635
Posted By TomHuffman
If, for example, the green that the colorist saw...

If, for example, the green that the colorist saw during the mastering process was a P3 green (which I gather is quite common), then I don't understand why you would want to calibrate to a desaturated...
Forum: Display Calibration   09-27-2016, 09:15 PM
Replies: 357
Views: 12,635
Posted By TomHuffman
Kris: This is the area that still troubles me....

Kris: This is the area that still troubles me. For the purpose of calibration ALL that matters is that the user gets the colors at the correct coordinates at the proper intensity. This issue of what...
Forum: Display Calibration   09-27-2016, 06:40 AM
Replies: 357
Views: 12,635
Posted By TomHuffman
This, I think, gets back to what Kris and I were...

This, I think, gets back to what Kris and I were talking about. Let me be real specific. Let's say the colorist selects a particular color as appropriate--for the sake of the example let's say a...
Forum: Display Calibration   09-27-2016, 05:26 AM
Replies: 357
Views: 12,635
Posted By TomHuffman
In that case I literally no longer know what...

In that case I literally no longer know what "color calibration" means for UHD content. If what the content creators see when they grade and color correct the image is no longer relevant, then I am...
Forum: Display Calibration   09-26-2016, 12:20 PM
Replies: 357
Views: 12,635
Posted By TomHuffman
There seems to be basic factual dispute that...

There seems to be basic factual dispute that needs to be definitively resolved before the issue of UHD color calibration can be authoritatively addressed. Just consider the last two posts.
...
Forum: Display Calibration   09-26-2016, 05:45 AM
Replies: 357
Views: 12,635
Posted By TomHuffman
Kris: If you select Rec. 2020 as the reference...

Kris: If you select Rec. 2020 as the reference gamut, but intend on calibrating to P3 primaries then, yes, there will be a mismatch between the expected triplet and the xy coordinate. But why do...
Forum: Display Calibration   09-25-2016, 06:45 PM
Replies: 357
Views: 12,635
Posted By TomHuffman
RGB is meaningful only within a specified gamut....

RGB is meaningful only within a specified gamut. In that sense RGB is always relative in terms of what visible color is actually produced. 100% (235) Green within the Rec. 2020 gamut is very...
Forum: Display Calibration   09-25-2016, 02:49 PM
Replies: 357
Views: 12,635
Posted By TomHuffman
The Panasonic is one of the displays that...

The Panasonic is one of the displays that includes a wide gamut color space specifically targeted at Rec. 2020. You can see this from your Rec. 2020 sweep. The most saturated green does not make it...
Forum: Display Calibration   09-25-2016, 01:41 PM
Replies: 357
Views: 12,635
Posted By TomHuffman
Kris and I spoke on the phone and I think we can...

Kris and I spoke on the phone and I think we can clear this up, at least somewhat. The problem with our discussion is that we were going back and forth between using color coordinates to mean...
Forum: Display Calibration   09-25-2016, 12:44 PM
Replies: 357
Views: 12,635
Posted By TomHuffman
OK, then how is what you are suggesting any...

OK, then how is what you are suggesting any different from simply calibrating to the P3 coordinates, which are, in your parlance, inside the 2020 country? In other words, what's the difference...
Forum: Display Calibration   09-25-2016, 11:16 AM
Replies: 357
Views: 12,635
Posted By TomHuffman
Kris, frankly, I have no idea what this means. If...

Kris, frankly, I have no idea what this means. If you mean target the 2020 primaries, but stay within the P3 color space, then you would get a severely undersaturated gamut. We'd be better off...
Forum: Display Calibration   09-25-2016, 01:48 AM
Replies: 357
Views: 12,635
Posted By TomHuffman
Kris: Yes, it would be easy enough to use...

Kris:

Yes, it would be easy enough to use DCI-P3 as the target gamut. However, I have been told many times--including by Lumagen--that P3 is not the gamut that should be used. Rec. 2020 is the...
Forum: Display Calibration   09-23-2016, 02:20 PM
Replies: 7,152
Views: 558,259
Posted By TomHuffman
In 3.1 we have implemented an HDR gamma option...

In 3.1 we have implemented an HDR gamma option that provides the correct gamma curve to calibrate to, but you'll have to put the Radiance Pro into HDR mode manually first. I have instructions for...
Forum: Display Calibration   09-17-2016, 01:46 AM
Replies: 7,152
Views: 558,259
Posted By TomHuffman
All work on AccuPel hardware is complete. The...

All work on AccuPel hardware is complete. The only software issue remaining is supporting HDR, which is fairly straightforward. Then it is just a matter of ordering the parts for the case and...
Forum: Display Calibration   09-01-2016, 05:20 PM
Replies: 357
Views: 12,635
Posted By TomHuffman
It is still in beta only because they are still...

It is still in beta only because they are still adding features to the firmware. The HDR test pattern part was added with the 071616 firmware. They have subsequently released some bug fixes to that....
Forum: Display Calibration   09-01-2016, 02:52 AM
Replies: 357
Views: 12,635
Posted By TomHuffman
It is already out. Lumagen released HDR support...

It is already out. Lumagen released HDR support for its PRO family of processors a few weeks ago.
Forum: Display Calibration   08-31-2016, 12:56 PM
Replies: 1,956
Views: 541,948
Posted By TomHuffman
No, I'd stick with what you have. Blue errors are...

No, I'd stick with what you have. Blue errors are relatively benign. You might try using 75% intensity test patterns to measure rather than 100%. There's no established threshold for dL that I know...
Forum: Display Calibration   08-25-2016, 05:06 AM
Replies: 584
Views: 25,169
Posted By TomHuffman
As soon as is humanly possible.

As soon as is humanly possible.
Forum: Display Calibration   08-24-2016, 01:24 PM
Replies: 584
Views: 25,169
Posted By TomHuffman
I just tried the file and I saw the same problem....

I just tried the file and I saw the same problem. It turns out that the program is extraordinarily sensitive to the formatting of the values. For example, 1 has to be formatted as 1.0 and zero has to...
Forum: Display Calibration   08-24-2016, 05:45 AM
Replies: 584
Views: 25,169
Posted By TomHuffman
Possible error

If anyone is getting a meter disconnected or meter not licensed error when taking readings, this is most likely due to taking measurements in continuous mode in one module and then opening a new...
Forum: Display Calibration   08-23-2016, 11:59 AM
Replies: 7,152
Views: 558,259
Posted By TomHuffman
I don't think that there is any correct answer to...

I don't think that there is any correct answer to this question. The only thing I would look at is which provides the most linear gamma response. This is one of those issues where the differences are...
Forum: Display Calibration   08-23-2016, 08:03 AM
Replies: 7,152
Views: 558,259
Posted By TomHuffman
I am not sure that I understand your question....

I am not sure that I understand your question. Calibration software and a good meter will SHOW YOU which is best.

If you are looking at white balance, then whichever setting gets you closest to...
Forum: Display Calibration   08-21-2016, 02:20 AM
Replies: 7,152
Views: 558,259
Posted By TomHuffman
Both are close.

Both are close.
Forum: Display Calibration   08-18-2016, 05:12 AM
Replies: 7,152
Views: 558,259
Posted By TomHuffman
No, no limitations. CP works with either retail...

No, no limitations. CP works with either retail or OEM meter.
Forum: Display Calibration   08-17-2016, 08:00 AM
Replies: 7,152
Views: 558,259
Posted By TomHuffman
Use whichever amplitude works best on your...

Use whichever amplitude works best on your display. You indicate that it is 75%.

User choice. 10% is the most standard, but the others may give better gamma results on some displays. Experiment....
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