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Forum: Display Calibration   08-26-2014, 10:30 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
There isn't a whole lot of difference between...

There isn't a whole lot of difference between DE76, DE94 or CIE2000 near the neutral axis - most of the tweaks are in the saturated colors which tend to be de-weighted in DE94 and CIE2000.
Forum: Display Calibration   08-21-2014, 05:58 AM
Replies: 4,202
Views: 307,720
Posted By gwgill
Well, you can install the X-Rite SW if that's...

Well, you can install the X-Rite SW if that's what you really want to do, but you certainly don't need to do that just to make the CCSS calibration files available. Putting the CD in the computer and...
Forum: Display Calibration   08-20-2014, 09:15 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
I suspect it would add great cost, relative to...

I suspect it would add great cost, relative to everything else that makes up a colorimeter, and exceeding the power capabilities of USB would add even more cost, complexity and inconvenience, so it's...
Forum: Display Calibration   08-20-2014, 07:28 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
You can load the calibrations direct from the CD...

You can load the calibrations direct from the CD or install .exe using oeminst.
Forum: Display Calibration   08-20-2014, 07:27 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
Well, it's hard to argue with practical...

Well, it's hard to argue with practical experience, but in principle the i1d2 and i1d3 should be temperature compensated to a very similar degree, since they use sensors that are very similar in...
Forum: Display Calibration   08-20-2014, 06:27 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
The i1d2 and i1d3 use rather similar TAOS/AMS L2F...

The i1d2 and i1d3 use rather similar TAOS/AMS L2F sensors, and all these sensors have similar temperature specs (200 ppm/°C), and similar dark current vs. temperature graphs.

The main difference...
Forum: Display Calibration   08-18-2014, 04:52 PM
Replies: 114
Views: 3,580
Posted By gwgill
Any sort of laser display is likely to be trouble...

Any sort of laser display is likely to be trouble in terms of observer variability. The standard observer curves work fine for most people and normal display technology, but add critical observers to...
Forum: Display Calibration   08-18-2014, 12:29 AM
Replies: 114
Views: 3,580
Posted By gwgill
That's rather strange. Plasma's use phosphors to...

That's rather strange. Plasma's use phosphors to create RGB, so their spectral response is quite similar to CRT's, and i1pro's (and the Spectrolino that preceded it) have been used to successfully...
Forum: Display Calibration   08-18-2014, 12:14 AM
Replies: 22
Views: 1,202
Posted By gwgill
Your question is nonsensical. Spectrometers...

Your question is nonsensical. Spectrometers aren't calibrated to produce a particular XYZ value, they measure the spectrum and the XYZ is computed from that.
Forum: Display Calibration   08-14-2014, 05:14 PM
Replies: 22
Views: 1,202
Posted By gwgill
I don't know how you figure that - there is...

I don't know how you figure that - there is manufacturing variation in the plates, and the internal instrument calibration tables are created from that specific plate, so yes, you can expect poorer...
Forum: Display Calibration   08-12-2014, 06:04 AM
Replies: 28
Views: 1,487
Posted By gwgill
Hmm. Shouldn't your color temperature be 11700 °R...

Hmm. Shouldn't your color temperature be 11700 °R if you are going to use archaic units ? :)

[I'd be pretty sure the EBU and recent SMPTE standards are spec'd in cd/m^2 ]
Forum: Display Calibration   08-12-2014, 05:36 AM
Replies: 4,202
Views: 307,720
Posted By gwgill
You are being generous. A more likely explanation...

You are being generous. A more likely explanation is that they simply cast the calculation result to an integer without thinking about what that does.
Forum: Display Calibration   08-11-2014, 05:47 PM
Replies: 2,526
Views: 143,901
Posted By gwgill
I doubt it will get resolved while those who are...

I doubt it will get resolved while those who are experiencing it, refuse to investigate it.
Forum: Display Calibration   08-11-2014, 04:49 PM
Replies: 2,526
Views: 143,901
Posted By gwgill
No-one is in a better position to figure out why...

No-one is in a better position to figure out why it isn't working than you, because you have full access to the problem. Everyone else has to wildly guess from a great distance.

You don't say...
Forum: Display Calibration   08-11-2014, 04:38 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
You can avoid such rounding in PS by selecting...

You can avoid such rounding in PS by selecting the area and then using Histogram to show the floating point Mean for each channel.
Forum: Display Calibration   08-10-2014, 11:12 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
You seem to have omitted the interesting bits -...

You seem to have omitted the interesting bits - ie. what happened after loading dccmtr.dll, etc.

Try running oem inst with the CD present, or run oeminst on the setup.exe file on the CD, or the...
Forum: Display Calibration   08-10-2014, 09:11 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
You are much better off digging in and figuring...

You are much better off digging in and figuring out what's going on, rather than guessing or asking other people to guess.

Do a screen capture of the two test patch sources, and check the captured...
Forum: Display Calibration   07-31-2014, 06:45 PM
Replies: 2,526
Views: 143,901
Posted By gwgill
Start with BT.1886 (== 2.4 power), and then...

Start with BT.1886 (== 2.4 power), and then adjust it to suite your viewing conditions.
Forum: Display Calibration   07-30-2014, 05:56 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
The datacolor .dll doesn't work on Linux or OS X,...

The datacolor .dll doesn't work on Linux or OS X, and can't legally be distributed without permission from DataColor.

Unless you can provide some information on what failed, it's hard to help.
Forum: Display Calibration   07-29-2014, 07:42 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
Hi, the part of the log you have posted...

Hi,
the part of the log you have posted doesn't have an error.

If there is an error, you need to show that part of it, and what leads up to it.
Forum: Display Calibration   07-17-2014, 05:23 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
Try running "spotread -D7" and report the...

Try running "spotread -D7" and report the output.
Forum: Display Calibration   07-17-2014, 06:31 AM
Replies: 5
Views: 415
Posted By gwgill
You say this is a "problem", but no indication as...

You say this is a "problem", but no indication as to why. Merely being something from the past is not a reason.

The CRT EOTF was not an accident - it is plumb in the correct range to efficiently...
Forum: Display Calibration   07-17-2014, 05:59 AM
Replies: 2
Views: 200
Posted By gwgill
The information you want is here...

The information you want is here (http://www.argyllcms.com/doc/targen.html).

Short answer "targen -v -d3 -e0 -B0 -g256 -f0 filename"

(You are are probably more likely to get answers to specific...
Forum: Display Calibration   07-16-2014, 10:48 PM
Replies: 4,202
Views: 307,720
Posted By gwgill
You haven't provided enough information. ...

You haven't provided enough information.

What error message does (ArgyllCMS) spotread return ?
Forum: Display Calibration   07-15-2014, 05:48 PM
Replies: 2,526
Views: 143,901
Posted By gwgill
That's the point of verification, to confirm that...

That's the point of verification, to confirm that the process itself is working. A bad verification indicates that it is not. Either the profile is not being created properly, or the resulting 3dLUT...
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