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Search: Posts Made By: sotti
Forum: Display Calibration   05-21-2015, 10:05 AM
Replies: 2,726
Views: 141,558
Posted By sotti
The issue is that we need to persist the inflight...

The issue is that we need to persist the inflight memory state of what's completed and what's not. Especially with our DLC it's not a simple thing. It's certainly not impossible, it opens up some...
Forum: Display Calibration   05-20-2015, 04:23 PM
Replies: 2,726
Views: 141,558
Posted By sotti
You're right that document is chalked full of...

You're right that document is chalked full of misinformation.

When I calibrate (and test autocal) with a lumagen, I basically zero out the lumagen. Calibrate the cuts-n-gains in the display,...
Forum: Display Calibration   05-20-2015, 04:12 PM
Replies: 2,726
Views: 141,558
Posted By sotti
While the changes are saved into the lumagen as...

While the changes are saved into the lumagen as it goes, there is no way to start the process from a mid point.
Forum: Display Calibration   05-19-2015, 12:17 PM
Replies: 2,726
Views: 141,558
Posted By sotti
They both effect the whole range. Gains see...

They both effect the whole range.

Gains see their biggest change closest to 100%, Offsets see their biggest changes as you get closer to black.

So those are the raw tools, Where you measure...
Forum: Display Calibration   05-18-2015, 04:31 PM
Replies: 2,726
Views: 141,558
Posted By sotti
No that's just old info. Pre 3D-LUT the CMS...

No that's just old info.

Pre 3D-LUT the CMS was closer to the panel, so using it as a course white balance helped maximize the bit usage.

With 3D LUTs, it's reversed and the 1D LUT now needs...
Forum: Display Calibration   05-17-2015, 09:56 AM
Replies: 2,726
Views: 141,558
Posted By sotti
And to extend that comment below visible error,...

And to extend that comment below visible error, or under 1 has always been the goal. With any of the dE standards 76, 94, 2000 when they are under 1, all of the formulas also start approaching 1.
...
Forum: Display Calibration   05-16-2015, 11:32 AM
Replies: 2
Views: 92
Posted By sotti
Not wierd at all, just that you were too blue to...

Not wierd at all, just that you were too blue to begin with.

Make sure you do the cuts and gains before doing grayscale and it will help it be a more even amount of change.
Forum: Display Calibration   05-16-2015, 07:34 AM
Replies: 2,726
Views: 141,558
Posted By sotti
It all depends on the actual color. If you...

It all depends on the actual color.

If you take 100% white Lab 100, 0, 0 as your target and Lab 100, 2.15, 2.15 as your sample, de76 and 94 both agree as a dE of 3 and dE00 reports 3.5, not a very...
Forum: Display Calibration   05-15-2015, 09:18 PM
Replies: 2,726
Views: 141,558
Posted By sotti
Right click any chart to go to properties. ...

Right click any chart to go to properties.
There is a check box to enable "Target lines"

You don't need design mode to make this change, any license can do it.

Once you've made your changes...
Forum: Display Calibration   05-15-2015, 04:31 PM
Replies: 2,726
Views: 141,558
Posted By sotti
We wanted to change targets because we know how...

We wanted to change targets because we know how visible the error is varies based on formula and the color in question.

That's the main reason we did away with the lines in general. But when they...
Forum: Display Calibration   05-15-2015, 04:27 PM
Replies: 2,726
Views: 141,558
Posted By sotti
It's not so much the formula as what we...

It's not so much the formula as what we internally consider to be good enough.




All dE formulas attempt to set the bar of one visible unit of difference at 1. It seems a natural...
Forum: Display Calibration   05-12-2015, 09:24 AM
Replies: 229
Views: 11,729
Posted By sotti
Correct. That's why it gets clipped and doesn't...

Correct. That's why it gets clipped and doesn't show up on a display. That's also the purpose of the max[V+b,0] function.
Forum: Display Calibration   05-11-2015, 11:54 AM
Replies: 1
Views: 106
Posted By sotti
I would use an i1Dispaly Pro and CalMAN. But...

I would use an i1Dispaly Pro and CalMAN.

But I'm partial to CalMAN.
Forum: Display Calibration   05-06-2015, 07:11 PM
Replies: 229
Views: 11,729
Posted By sotti
V is the value in the above equation. It's...

V is the value in the above equation.

It's just algebra, they name variables with some meaning, but you don't really need anything beyond using it for substitution in solving the equation.

The...
Forum: Display Calibration   04-27-2015, 09:52 AM
Replies: 744
Views: 29,081
Posted By sotti
Just to note the scale on the LS image is double...

Just to note the scale on the LS image is double the scale for argyll, causing the data to look like a smaller error comparatively.
Forum: Display Calibration   04-22-2015, 04:45 PM
Replies: 233
Views: 7,406
Posted By sotti
The other perfect solution is to go to spectral...

The other perfect solution is to go to spectral recording and playback.

The spectrum is the physical thing, if you can reproduce that then viewers will see it the same way as the reference object.
Forum: Display Calibration   04-20-2015, 05:00 PM
Replies: 4
Views: 223
Posted By sotti
The ultimate goal is to have red,green, and blue...

The ultimate goal is to have red,green, and blue on top of the yellow line.

But since we are doing contrast before we do white point and before we do gamma, all we are concerned about is clipping....
Forum: Display Calibration   04-18-2015, 10:18 PM
Replies: 4
Views: 223
Posted By sotti
Numerical gamma blips above about 85% are...

Numerical gamma blips above about 85% are meaningless, it takes a imperceptible difference to generate large swings at those stimulus levels.

You can set contrast using a near white ramp. I...
Forum: Display Calibration   04-18-2015, 10:08 PM
Replies: 56
Views: 1,073
Posted By sotti
Calibration is just getting to be more and more...

Calibration is just getting to be more and more important.

Everybody is getting onboard with the standards. BT.709, BT.1886 are the standards for HDTV and that's what people are using. We had a...
Forum: Display Calibration   04-18-2015, 01:16 PM
Replies: 56
Views: 1,073
Posted By sotti
No that's just one consumers educated guess. ...

No that's just one consumers educated guess.

I can assure you far more scientific things actually go on in the industry. We just got back from the Broadcasters expo in vegas, and I can assure you...
Forum: Display Calibration   04-17-2015, 09:36 AM
Replies: 59
Views: 1,422
Posted By sotti
The trick with HDR is that most of the mastering...

The trick with HDR is that most of the mastering going on right now is for 2000nits or 4000nits depending on the reference display the colorist is using.

All of the current HDR systems like dolby...
Forum: Display Calibration   03-24-2015, 09:53 AM
Replies: 2,726
Views: 141,558
Posted By sotti
I just verified with 5.4.2 that this is working...

I just verified with 5.4.2 that this is working correctly.
Forum: Display Calibration   03-22-2015, 11:35 PM
Replies: 2,726
Views: 141,558
Posted By sotti
Make sure you're running 5.4.2 and that you do...

Make sure you're running 5.4.2 and that you do have video levels selected.

Also make sure you're using the lumagen as the pattern generator and you don't have a pattern disc connected.
Forum: Display Calibration   03-22-2015, 08:44 AM
Replies: 2,726
Views: 141,558
Posted By sotti
The mini is now working correctly. It was just an...

The mini is now working correctly. It was just an intermittent bug in our beta.
Forum: OLED Technology and Flat Panels General   03-18-2015, 07:55 PM
Replies: 944
Views: 40,675
Posted By sotti
That is not true. CalMAN uses dE 2000 exactly as...

That is not true. CalMAN uses dE 2000 exactly as it's written. No weighting exactly to spec.

If chromapure reports something different, they are the one that is cooking the input to the formula.
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