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TomHuffman's Avatar TomHuffman 09:47 AM 04-06-2011
A Chroma 5 PRO or i1Pro. If you can afford it, both. If you can't, then the Chroma 5 PRO.

Quote:
Originally Posted by pers1 View Post

Hey Tom
What Software/Meter Bundles would u reccommend for me doing calibration for my home setup :

My Setup
Projector: JVC X7
Processor: DVDO iScan Duo
Screen: Adeo grey 77"
Room has good light control

my cinema:
http://avforum.no/minhjemmekino/show.php//meridian861



TomHuffman's Avatar TomHuffman 09:50 AM 04-06-2011
ChromaPure 2.1.1 has been released and is available for download. Just go to our News page for a link and release notes. This is a maintenance release that provides some bug fixes that were discovered in 2.1.

If you have no issues with 2.1, you can skip this release. It has no new features.
pers1's Avatar pers1 11:12 AM 04-06-2011
Got a PM so I deleted the Q, Thanks Tom
breadvan's Avatar breadvan 08:12 PM 04-06-2011
Tom, I suppopse 2.1 should be uninstalled before installing 2.1.1 ?
buzzard767's Avatar buzzard767 08:15 PM 04-06-2011
Quote:
Originally Posted by breadvan View Post

Tom, I suppopse 2.1 should be uninstalled before installing 2.1.1 ?

As always. The installer will tell you to remove the old version if you forget.
rachmat-d's Avatar rachmat-d 10:19 AM 04-07-2011
Tom, please advise what to do with my calibration ?
I am using Sony xbr 8 and radiance.
I am confused with delta E or Luminance is important with CMS ?
I can not get the blue right .

 

sony 7-4-11.zip 433.1611328125k . file
Attached: sony 7-4-11.zip (433.2 KB) 
TomHuffman's Avatar TomHuffman 11:19 AM 04-07-2011
Quote:
Originally Posted by rachmat-d View Post

Tom, please advise what to do with my calibration ?
I am using Sony xbr 8 and radiance.
I am confused with delta E or Luminance is important with CMS ?
I can not get the blue right .

dE is a measurement of color error, so yes it is important. Luminance is just one component of dE.

Blue is undersaturated. Unfortunately, there is nothing you can do about this, unless the Sony has a Picture mode that moves the color points outwards. Then you could use the Radiance to bring them back to their proper location.
rachmat-d's Avatar rachmat-d 10:11 AM 04-08-2011
Thanks Tom
Kilgore's Avatar Kilgore 11:10 AM 04-08-2011
Tom, I sent a message to you through the Support page on the ChromaPure site requesting a license for a new i1 Display LT I purchased as a replacement for my old one. I included the serial number for both meters.
Goosey's Avatar Goosey 09:49 PM 04-08-2011
Quote:
Originally Posted by TomHuffman View Post

A Chroma 5 PRO or i1Pro. If you can afford it, both. If you can't, then the Chroma 5 PRO.

How much better is the Chroma 5 Pro compared to the 2/LT. The Chroma 5 Pro package is quite a step up in price, although one benefit to getting the Chroma 5 Pro is that it can be recalibrated?
TomHuffman's Avatar TomHuffman 11:17 PM 04-08-2011
Quote:
Originally Posted by Goosey View Post

How much better is the Chroma 5 Pro compared to the 2/LT. The Chroma 5 Pro package is quite a step up in price, although one benefit to getting the Chroma 5 Pro is that it can be recalibrated?

New, it is considerably more accurate and, as you say, it can be recalibrated.
drapp1952's Avatar drapp1952 01:48 PM 04-09-2011
Tom, Under CMS, could 25% and 50% Rec.709 reference gamuts be added as options under "Select Reference Gamut"? I like the simplicity of the graph for corrections there, versus toggling between measurement modes and charts in Advanced Color Management (which is a great addition to CP).

Finding the best overall correction for saturation levels more typical in video material (not just 100% sat) is more feasible now with CP's Advanced Color Management, assuming decent tracking or linearity in the correction hardware/software and viewing device. Fortunately the JVC RS10 and VideoEQ seems to respond linearly to saturation and brightness adjustments. Prior to this CP I couldn't monitor results so easily. (I'm not a spreadsheet expert or into inputting data manually.)
TomHuffman's Avatar TomHuffman 03:41 PM 04-09-2011
Quote:
Originally Posted by drapp1952 View Post

Tom, Under CMS, could 25% and 50% Rec.709 reference gamuts be added as options under "Select Reference Gamut"? I like the simplicity of the graph for corrections there, versus toggling between measurement modes and charts in Advanced Color Management (which is a great addition to CP).

Unless I misunderstand, this is really not necessary.

First, use ACM to diagnose how well your calibration has tracked using the standard gamut selections. If you see that 100% saturation does not yield good results, then you can go back to the Color Management module and recalibrate at 75% saturation. I do not believe that calibrating to 50% or 25% saturation instead would yield significantly different overall results.

Now, go back to ACM and remeasure to see the results at all levels. The Color Management module is not for reporting or diagnosis. It is strictly for calibration. Use the ACM module for diagnosis and reporting.
Nudgiator's Avatar Nudgiator 11:05 AM 04-10-2011
Tom, which concrete gamma formula does Chroma Pure use to calculate the gamma ? ITU/EBU, Power Function, L*, Dicom, sRGB ... ???
buzzard767's Avatar buzzard767 11:47 AM 04-10-2011
Question: If I profile a C5 from an i1Pro used for reference, then disconnect the C5 to use the i1Pro for color, if I once again want to use the C5 to check grayscale does the entire meter profiling procedure need to be repeated or can I just press the apply button in the Meter Correction module after re-initiating the C5?
TomHuffman's Avatar TomHuffman 01:39 PM 04-10-2011
Quote:
Originally Posted by Nudgiator View Post

Tom, which concrete gamma formula does Chroma Pure use to calculate the gamma ? ITU/EBU, Power Function, L*, Dicom, sRGB ... ???

Power function.
TomHuffman's Avatar TomHuffman 01:45 PM 04-10-2011
Quote:
Originally Posted by buzzard767 View Post

Question: If I profile a C5 from an i1Pro used for reference, then disconnect the C5 to use the i1Pro for color, if I once again want to use the C5 to check grayscale does the entire meter profiling procedure need to be repeated or can I just press the apply button in the Meter Correction module after re-initiating the C5?

If yoiu have corrected the C5 with the i1Pro, I can think of no reason you would want to then use the i1Pro for color. The whole point of meter correction is that the corrected meter emulates the reference device.

But to answer your question, I honestly haven't tested this scenario, so I can't say for sure. In any case you wouldn't have to do the correction again. Just export a session file after applying the correction. You can always import that session later on to reuse the corrections.
Nudgiator's Avatar Nudgiator 01:46 PM 04-10-2011
Quote:
Originally Posted by TomHuffman View Post

Power function.

Hm, I used the Power Function with CalMAN & Chroma Pure too with a gamma target value of 2.2. My room is completely optimized (= black stuff) and darkened. But the resulting picture is much too dark with details lost in the low IREs. I have to increase the brightness controler of the JVC-RS40 to compensate it. And that destroys the black level. The only solution is to choose a gamma value of 2.0.

Do you have any further solutions for that problem ?
buzzard767's Avatar buzzard767 03:09 PM 04-10-2011
Quote:
Originally Posted by TomHuffman View Post

If yoiu have corrected the C5 with the i1Pro, I can think of no reason you would want to then use the i1Pro for color. The whole point of meter correction is that the corrected meter emulates the reference device.

But to answer your question, I honestly haven't tested this scenario, so I can't say for sure. In any case you wouldn't have to do the correction again. Just export a session file after applying the correction. You can always import that session later on to reuse the corrections.

Thanks Tom. The question arose because of a PM exchange and neither of us knew the answer. Is there any case, any type of display, where the i1Pro would be preferable to the profiled C5? I'm calibrating a Runco 750i for a good friend on Tuesday and want it as accurate as possible.

Again, thank you. Your customer service via this thread and your site is second to none and I'm really glad I chose ChromaPure Pro.
ConnecTEDDD's Avatar ConnecTEDDD 03:46 PM 04-10-2011
Quote:
Originally Posted by buzzard767 View Post

Thanks Tom. The question arose because of a PM exchange and neither of us knew the answer. Is there any case, any type of display, where the i1Pro would be preferable to the profiled C5? I'm calibrating a Runco 750i for a good friend on Tuesday and want it as accurate as possible.

Again, thank you. Your customer service via this thread and your site is second to none and I'm really glad I chose ChromaPure Pro.

+1 For The Very Important After Sales Customer Support Of ChromaPure.
TomHuffman's Avatar TomHuffman 04:56 PM 04-10-2011
Quote:
Originally Posted by Nudgiator View Post

Hm, I used the Power Function with CalMAN & Chroma Pure too with a gamma target value of 2.2. My room is completely optimized (= black stuff) and darkened. But the resulting picture is much too dark with details lost in the low IREs. I have to increase the brightness controler of the JVC-RS40 to compensate it. And that destroys the black level. The only solution is to choose a gamma value of 2.0.

Do you have any further solutions for that problem ?

I just don't see this. If a projector's peak output is 14 fL, the the output at 10% input should be 0.084 fL, at 5% 0.018 fL. This is 2.22 gamma and looks good to my eyes.
TomHuffman's Avatar TomHuffman 04:57 PM 04-10-2011
Quote:
Originally Posted by buzzard767 View Post

Is there any case, any type of display, where the i1Pro would be preferable to the profiled C5?

None that I can think of. After correction, for all intents and purposes you are using an i1Pro, except for the vastly better low-light sensitivity.
rachmat-d's Avatar rachmat-d 09:26 PM 04-11-2011
Tom,
What color setting in ChromaPure for your dvd test pattern ( Rec 709 or NTSC ) if i am using it with HTPC ( Media Player Classic ) and JVC RS 25 ?
Thanks.
TomHuffman's Avatar TomHuffman 10:47 PM 04-11-2011
Quote:
Originally Posted by rachmat-d View Post

Tom,
What color setting in ChromaPure for your dvd test pattern ( Rec 709 or NTSC ) if i am using it with HTPC ( Media Player Classic ) and JVC RS 25 ?
Thanks.

I'm sorry, I don't understand your question.
rachmat-d's Avatar rachmat-d 11:58 PM 04-11-2011
Tom,

I like to calibrate JVC RS 25, source is HTPC (Player is Media Player Classic ) using RGB color pattern from your DVD file.
I assumed to use Rec 709 in Chroma pure or i use 601 ( NTSC ) , as the file is SD ?
TomHuffman's Avatar TomHuffman 12:03 AM 04-12-2011
Quote:
Originally Posted by rachmat-d View Post

I like to calibrate JVC RS 25, source is HTPC (Player is Media Player Classic ) using RGB color pattern from your DVD file.
I assumed to use Rec 709 in Chroma pure or i use 601 ( NTSC ) , as the file is SD ?

The pattern source has nothing to do with the gamut selection in CP. Select whichever gamut you want to calibrate to.
buzzard767's Avatar buzzard767 04:27 AM 04-12-2011
Should a Hubble be profiled from a reference meter, in my case the i1Pro, or are the profiles already within the Hubble more than proficient?

Thanks,
Buzz
anbjornk's Avatar anbjornk 07:34 AM 04-12-2011
Quote:
Originally Posted by TomHuffman View Post

I just don't see this. If a projector's peak output is 14 fL, the the output at 10% input should be 0.084 fL, at 5% 0.018 fL. This is 2.22 gamma and looks good to my eyes.

BUT, do we know for sure that the gamma at 5% and 10% is 2.2? Even though the average gamma is 2.2, there might be deviations from this in some areas. If thee gamma is 2.2 flat, there should be plenty of details in the darker areas.
rowland.johnson's Avatar rowland.johnson 08:53 AM 04-12-2011
It would seem that importing a previous session causes subsequent measurements to be either incorrect or to be displayed incorrectly. To see this do the following
1. Start CP and go to the Pre-Calibration Grayscale panel.
2. Take a measurement. I took one at 30% and RGB were each very close to 100%
3. Export to a file
4. Import that file
5. Observe that the RGB at that measurement are all now different. In my case R 110%, G 95%, B 110%
6. Taking other measurements shows R and B being higher and with G being lower than what they should be.

I'm using build 2.1.17629
JoeFinn's Avatar JoeFinn 01:23 PM 04-12-2011
Quote:
Originally Posted by rowland.johnson View Post

It would seem that importing a previous session causes subsequent measurements to be either incorrect or to be displayed incorrectly. To see this do the following
1. Start CP and go to the Pre-Calibration Grayscale panel.
2. Take a measurement. I took one at 30% and RGB were each very close to 100%
3. Export to a file
4. Import that file
5. Observe that the RGB at that measurement are all now different. In my case R 110%, G 95%, B 110%
6. Taking other measurements shows R and B being higher and with G being lower than what they should be.

I'm using build 2.1.17629

I have noticed some weird behavior when trying to continue incremental work on a previous session. What I basically was trying to do was load previous session, save under new name and take new pre calibration measurements to follow progress. When I try to measure new pre cal, the results show like the program is calculating something wrong, results are not even close to the ones where I left of (Chroma 5 Pro). I close the program, start new session, init meter, take measurements and get the results I expect. I have seen this many times.

I think my problem might be related.
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