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Search: Posts Made By: zoyd
Forum: Display Calibration   05-29-2015, 06:16 PM
Replies: 605
Views: 31,128
Posted By zoyd
linear and gamma light APLs are working as...

linear and gamma light APLs are working as expected but if you choose "constant gray" in the madTPG window, CM patterns always show a black background.
Forum: Display Calibration   05-29-2015, 12:30 PM
Replies: 5,985
Views: 443,804
Posted By zoyd
Can you install an older version before I started...

Can you install an older version before I started fiddling with the advanced patterns (like 3.1.9 (http://sourceforge.net/projects/hcfr/files/Windows/3.1.9/)) and see if the problem still exists?
Forum: Display Calibration   05-29-2015, 04:32 AM
Replies: 3,702
Views: 217,177
Posted By zoyd
fhoech When using these settings for a...

fhoech

When using these settings for a synthetic profile:

https://dl.dropboxusercontent.com/u/2621383/Screen%20Shot%202015-05-29%20at%207.27.57%20AM.png

I'm getting a profile with a 2.2...
Forum: Display Calibration   05-29-2015, 04:03 AM
Replies: 137
Views: 12,126
Posted By zoyd
Here are the histograms of color differences I...

Here are the histograms of color differences I calculate between an ideal [2.4 BT.1886:Lb=0] display and Lb=0.05 cd/m^2, Lb=0.09 cd/m^2, and [Lb=0,gamma=2.2] displays. I included the gamma=2.2 case...
Forum: Display Calibration   05-28-2015, 07:58 PM
Replies: 137
Views: 12,126
Posted By zoyd
That was helpful, I found an error in the 0 black...

That was helpful, I found an error in the 0 black level offset profile I was using and now the mean,max are close to what you are getting:

Total errors (CIEDE2000): peak = 7.454832, avg =...
Forum: Display Calibration   05-28-2015, 06:30 PM
Replies: 137
Views: 12,126
Posted By zoyd
I'm using ArgyllCMS 1. Generate quasi-random...

I'm using ArgyllCMS

1. Generate quasi-random perceptual space filling patch set of 500,000 patches [./targen -v -d3 -f 500000 -Q -c Rec709.icm -O big]
2. fakeread patches against BT.1886 EOTF...
Forum: Display Calibration   05-28-2015, 05:51 PM
Replies: 137
Views: 12,126
Posted By zoyd
I calculated an even smaller difference, 500,000...

I calculated an even smaller difference, 500,000 patch simulation:

https://dl.dropboxusercontent.com/u/2621383/Screen%20Shot%202015-05-28%20at%208.48.20%20PM.png



edit: Used wrong tone curve...
Forum: Plasma Flat Panel Displays   05-28-2015, 03:39 PM
Replies: 12,094
Views: 616,092
Posted By zoyd
The timing board and it's firmware is what...

The timing board and it's firmware is what determines the temporal behavior of the black level which is basically the number of reset pulses applied and their rise and fall times. I don't know if...
Forum: Display Calibration   05-28-2015, 02:46 PM
Replies: 605
Views: 31,128
Posted By zoyd
use gamma light for the madTPG setting. Not sure...

use gamma light for the madTPG setting. Not sure why you are having madTPG problems, current version works here with current versions of DCG, HCFR, CM, and LS.
Forum: Display Calibration   05-28-2015, 02:21 PM
Replies: 605
Views: 31,128
Posted By zoyd
yes, gamma varies with pattern geometry on...

yes, gamma varies with pattern geometry on plasmas so you can't use Ted's disk for comparison if you calibrate with APL patterns. Of course you could just compare the 11% patterns from the disk to...
Forum: Plasma Flat Panel Displays   05-28-2015, 12:58 PM
Replies: 12,094
Views: 616,092
Posted By zoyd
It depends on the actual level distribution...

It depends on the actual level distribution (that's why the ANSI looks fine), the solid gray backgrounds seem to be the worst case and the random patterns from the sequence are closer to what you get...
Forum: Display Calibration   05-28-2015, 12:22 PM
Replies: 605
Views: 31,128
Posted By zoyd
yes

yes
Forum: Display Calibration   05-28-2015, 12:11 PM
Replies: 605
Views: 31,128
Posted By zoyd
Sounds like it, have you checked that you have...

Sounds like it, have you checked that you have selected RGB and not YCbCr output?
Forum: Plasma Flat Panel Displays   05-28-2015, 11:23 AM
Replies: 12,094
Views: 616,092
Posted By zoyd
This should give you the same brightness setting...

This should give you the same brightness setting regardless of APL, at least it does for me. This sets level 16 just below the first possible dither level the display can manage. The more interesting...
Forum: Display Calibration   05-28-2015, 08:54 AM
Replies: 5,985
Views: 443,804
Posted By zoyd
DCI-P3 and 9300K are easy enough to add but can...

DCI-P3 and 9300K are easy enough to add but can you tell me under what conditions the manual color space as crashing? I have not been able to reproduce this.
Forum: Plasma Flat Panel Displays   05-28-2015, 03:45 AM
Replies: 12,094
Views: 616,092
Posted By zoyd
It really depends on who you get, sometimes...

It really depends on who you get, sometimes they'll just start replacing stuff just because the client is unhappy. But if you can demonstrate the problem visually and the tech knows what it should...
Forum: Plasma Flat Panel Displays   05-27-2015, 08:08 PM
Replies: 12,094
Views: 616,092
Posted By zoyd
Assuming you had brightness set properly that is...

Assuming you had brightness set properly that is high compared to what others have measured with and without the voltage adjustments. Take a look at this...
Forum: Plasma Flat Panel Displays   05-27-2015, 04:34 AM
Replies: 12,094
Views: 616,092
Posted By zoyd
Display this from usb stick and measure the black...

Display this from usb stick and measure the black level, it should be close to 0.03 cd/m^2. If it is then your panel has normal black lift with APLs that exceed 10%.
Forum: Plasma Flat Panel Displays   05-26-2015, 05:00 PM
Replies: 12,094
Views: 616,092
Posted By zoyd
I asked because a 25% APL will give the highest...

I asked because a 25% APL will give the highest black level the panel will generate, compare that to a typical value of 0.03 cd/m^2.
Forum: Plasma Flat Panel Displays   05-26-2015, 12:13 PM
Replies: 12,094
Views: 616,092
Posted By zoyd
What is your black level when using a 25% APL...

What is your black level when using a 25% APL pattern?
Forum: Display Calibration   05-26-2015, 10:03 AM
Replies: 5,985
Views: 443,804
Posted By zoyd
Sounds like folks use Ted's sequences so I will...

Sounds like folks use Ted's sequences so I will make them easier to set-up. However, they will still be "one at a time" unless I add multiple color checker slots - which I might do. I'll have a look...
Forum: Display Calibration   05-25-2015, 11:31 AM
Replies: 3,702
Views: 217,177
Posted By zoyd
So madTPG APL patterns (including the black...

So madTPG APL patterns (including the black border) kept it from dimming?
Forum: Display Calibration   05-25-2015, 09:21 AM
Replies: 3,702
Views: 217,177
Posted By zoyd
Sounds good, thanks for the info.

Sounds good, thanks for the info.
Forum: Plasma Flat Panel Displays   05-25-2015, 09:14 AM
Replies: 12,094
Views: 616,092
Posted By zoyd
Hard to say whether you'd notice any difference...

Hard to say whether you'd notice any difference but it won't hurt.
Forum: Display Calibration   05-25-2015, 08:10 AM
Replies: 3,702
Views: 217,177
Posted By zoyd
I've seen one report that APL patterns will...

I've seen one report that APL patterns will defeat the auto dimming but only if it does not contain a black border between the window and background (which madVR does by default). I would suggest to...
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