The Official ChromaPure thread - Page 30

Originally Posted by bodosom

Not to detract from your primary point but I don't see why this matters..

Originally Posted by buzzard767

Again, I haven't seen your yellow problem in any calibrated set. Perhaps it's just your LGs. Have you calibrated other brands?

Originally Posted by TomHuffman

No, that comes later. The stuff in 2.1 is a prerequisite.

Originally Posted by Ronomy

Hi Tom,

Been pretty quiet on updates! Never saw 2.1 come to light. Any status available for the automated calibration update?

Ron

Originally Posted by TomHuffman

Auto-Cal will comes after this.

Originally Posted by Kilgore

Tom, check out this thread:

http://www.avsforum.com/avs-vb/showthread.php?t=1315764

According to the CalMan guys, during initialization, the i1 Display 2/LT does not require the step where you put the meter on a dark planar surface. Is this really the case?

If so, why is the step included? Can I just keep the meter on the screen and click ok for the "Apply Mode" step, and not worry about putting it on a planar surface?

Originally Posted by Lawguy

I have been using Calman and am using Chromapure for the first time. They both have their weak and strong points.

With my Radiance, calibrating gamut with Chromapure is very easy. Chromapure can show gamut in RGB. Calman can not. Big score here for Chromapure. I can do a full gamut calibration with Chromapure in the amount of time it takes for me to need another dark reading with my i1Pro. If you have a CMS with HSL controls, I think either program would be around the same.

Greyscale/gamma is about the same. I have Calman set up in a way that I do both greyscale and gamma on one screen. Slight edge here to Calman.

I use an i1pro and i1Lt. Calman has a one step meter profiling procedure. Chromapure has a multistep procedure that requires a lot of work and even a program restart. Win here for Calman.

Chromapure is a lot faster than Calman is. Calman is quite slow. Edge here to Chromapure.

Calman has a sleeker look and feel. Edge to Calman.

Originally Posted by Geof

The new JVC's projectors are going to get a firmware upgrade to allow them to have "1 Step" calibration ability with Calman 4.2. Is there any chance that Chromapure would get this capability or is this a proprietary interface?

On a more general note, do you think automated calibration works well? It seems as though this capability is expanding into more devices, is this the future for calibration?

Originally Posted by TomHuffman

I generally agree with this.

Have you tried using the Gamma module? Since it contains both point-by-point gamma targets and RGB values, it is a good place to do gamma and white balance simultaneously.

Originally Posted by Lawguy

Automation will grow the market and that is a good thing. Still, there are several obstacles in the way of a good calibration. If you have a good program like Chromapure, you have eliminated one obstacle: lack of good information. The biggest is having good controls. Without them, you spin your wheels. The other big one is understanding. If you don't know what you are doing, it is all a waste of time. Also, without a reliable meter, you may do more harm than good.

Originally Posted by Lawguy

Greyscale/gamma is about the same. I have Calman set up in a way that I do both greyscale and gamma on one screen. Slight edge here to Calman.

Originally Posted by Kelvin1965S

If you use the Chromapure gamma section it displays RGB in real time as it does gamma in real time, therefore no edge to Calman on this score.

Originally Posted by Lawguy

Chromapure can show gamut in RGB. Calman can not.

Originally Posted by TomHuffman

I'll have to contact JVC about this.

Regarding automation, this offers me an opportunity to talk about something that I have been thinking about for a long time. Yes, we are going to offer automation. It will come after we get 2.1 out of the door. Right now, we are stuck on a problem in 2.1, so this is taking longer than I originally thought.

There is no issue that I have had more questions about than automation. I must have been asked 50 times, in one way or another, when we are going to offer automation. Software development is not simple and predicting these things with any precision is nearly impossible. However, it is coming. Please stop asking me when. It is the next thing on our plate.

What surprises me is the level of interest in this. I perhaps made the mistake of designing the software largely according to my own tastes. We haven't focused on automation because it is something I would never personally use--I am obviously outside of the mainstream on this.

The results from an automated procedure will never be as accurate as what you can get using your own judgment and fine tweaking. I have come to the conclusion that most people just don't like fiddling with computers and don't like calibrating displays, and the idea of automation is appealing because it limits one's interaction with the display and the PC.

However, I think that there are some misconceptions about this. First, you will always have to follow-up an automated session with manual tweaking of the results. Second, you can't even begin an automated calibration without first making some manual adjustments (white and black level) and decisions regarding baseline presets. For example, I had a really difficult calibration the other day. It took me about 4 hours to complete. The problems I encountered had nothing to do with anything automation would have helped with. It was mostly a matter of choosing the correct presets to begin with and it took a lot of trial-and-error to get it right. Furthermore, if the software is well designed and the display's controls work properly, a calibration should not take a long time. You should be able to complete a basic grayscale and gamut calibration in 15-20 minutes. Multi-point gamma/grayscale of course takes longer, but this is only because you seek a extremely high level of accuracy, which always requires manual tweaking whether you use automation or not.

Originally Posted by Lawguy

Have you managed to get Chromapure to use the Radiance as a pattern generator? Every time I try, Chromapure crashes. This is a beta though.

Originally Posted by TomHuffman

... you will always have to follow-up an automated session with manual tweaking of the results.

Originally Posted by Ronomy

The reason I want the automation is because the Duo gives me thumb blisters. The adjustments are too fine. We need a coarse adjustment. At least with automation it will be close and easy to fine tune after.

Originally Posted by bodosom

I not quite sure what this means (but it's been a while so maybe I'm confused) because I thought you could assemble any collection of CalMAN objects* on a workflow "page". This is one of the wins with CalMAN.

*assuming you have a license for that object.

Originally Posted by Hopsa

I come from Austria and i have a problem with ChromaPure 2.0.3 and x-rite DTP-94B.

Grayscale measurements are as follows:
Attachment 204554

with HCFR it looks perfect:
Attachment 204555

Does anyone have any idea what is wrong ?
Why can't I see blue?

Originally Posted by coderguy

I have an i1LT and I think my new lamp on my projector went defectively DIM, but it's hard for me to tell with my eyes alone. I measured 5-6 FL max with my i1LT, but I know this device is not accurate for measuring light.

Originally Posted by TomHuffman

Actually, the i1LT should measure luminance fine. Since you have a High Power you need to be careful to measure with as small an angle as possible. The HP has a very narrow viewing cone.