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125 point Auto Cal with Calman5 or Chromapure on JVC RS48 and Lumagen Mini

post #1 of 14
2/27/13 at 11:20am
Thread Starter 
Just purchased a JVC RS48 up from a JVC X30b a few weeks ago and along with that purchased a Radiance Mini. I am interested in trying to perform the 125 point auto cal but was stuck between the Calman5 and the C6 meter or the Chromapure and the display pro 3 meter. The Chromapure package seems to be a few hundred cheaper overall but I want the best auto calibration possible between those two packages and something that is relatively easy to use.

Last thread I could find was old on the same subject so with software versions changing there could be a big difference now.

Anyone with a mini used both? Any suggestions on which to get? What’s the easiest software to use from a beginners standpoint? One or the other (software/meter combo) more accurate?

Thanks you so much for your help?
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post #2 of 14
2/27/13 at 3:52pm
Quote:
Originally Posted by tdub0609 View Post

Just purchased a JVC RS48 up from a JVC X30b a few weeks ago and along with that purchased a Radiance Mini. I am interested in trying to perform the 125 point auto cal but was stuck between the Calman5 and the C6 meter or the Chromapure and the display pro 3 meter. The Chromapure package seems to be a few hundred cheaper overall but I want the best auto calibration possible between those two packages and something that is relatively easy to use.

Last thread I could find was old on the same subject so with software versions changing there could be a big difference now.

Anyone with a mini used both? Any suggestions on which to get? What’s the easiest software to use from a beginners standpoint? One or the other (software/meter combo) more accurate?

Thanks you so much for your help?

ChromaPure is easy as it can be. You set your black level on the display, you set max white and make sure 100 percent white has the best RGB balance your display controls will provide. You then pick a gamma, select to calibrate grayscale and gamut in the checkboxes and go away for forty minutes.
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post #3 of 14
3/6/13 at 4:43pm
BTW. critical info. Its a 124 point calibration, not 125. smile.gif
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post #4 of 14
3/6/13 at 5:13pm
Quote:
Originally Posted by mark haflich View Post

BTW. critical info. Its a 124 point calibration, not 125. smile.gif

CalMAN will calibrate all 125 points, but normally you want black as black as you can make it.
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post #5 of 14
3/6/13 at 11:00pm
So you are saying, boy this is tough, you only calibrate 124 points (is that a 124 point calibration? by golly I think it is) unless for some ungodly reason you do not want black to be black and then gosh golly Calman will let you do that, raise that point and now ta da you can do a 125 point calibration). Seriously Joel, my point is that instead of a 7 point calibration we can now do a 124 point calibration. Whether this is the best number of points or rather an adequate number of points, it probably isn't with something like 1000 plus being ideal for bt 709, but one needs automation and a signal generator that will generate all the points.
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post #6 of 14
3/6/13 at 11:12pm
We calibrate 125, it's just highly unlikely we have to adjust the 125th point. But we check all the settings and measure it and adjust it to whatever spec the calibration dictates.

The radiance can generate all 16.4M RGB 8bit triplets, so it has no problem generating any pattern for any kind of calibration.

124/125 the difference isn't a big deal.
Edited by sotti - 3/6/13 at 11:19pm
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post #7 of 14
3/27/13 at 2:43pm
The OP essentially asked the question I've been trying to find an answer to.

Just to be clear on a few things.

Do you need a signal generator in addition to the Radiance mini?

Also, after you do the auto-cal, what's next? Do you have to manually apply the adjustments to either the projector or the Lumagen? Or, does it automatically update the settings in the Lumagen as part of the autocal run?
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post #8 of 14
3/27/13 at 2:44pm
Quote:
Originally Posted by Tnedator View Post

Do you need a signal generator in addition to the Radiance mini?

no, the mini is used for patterns
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post #9 of 14
3/27/13 at 3:12pm
Quote:
Originally Posted by Tnedator View Post

Also, after you do the auto-cal, what's next?
When AutoCal has completed, you're done, just close the app trun on a movie or show and enjoy.
Quote:
Originally Posted by Tnedator View Post

Do you have to manually apply the adjustments to either the projector or the Lumagen? Or, does it automatically update the settings in the Lumagen as part of the autocal run?

Durning the Calibration process, you will want to calibrate the projector to get the best performance before running AutoCal. Getting the dynamic range set correctly, and getting the gamut reasonably calibrated is essential to maximizing what the AutoCal can do.
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post #10 of 14
3/27/13 at 3:26pm
Quote:
Originally Posted by sotti View Post

When AutoCal has completed, you're done, just close the app trun on a movie or show and enjoy.
Durning the Calibration process, you will want to calibrate the projector to get the best performance before running AutoCal. Getting the dynamic range set correctly, and getting the gamut reasonably calibrated is essential to maximizing what the AutoCal can do.

Ok, so just to make sure I understand this.

I would first use the sensor and software to manually calibrate the projector.

Then, after performing a manual calibration of the projector, I would then run autocal to fine tune the calibration?

Assuming the above is correct, for clarity on the "just close the app turn on a movie and enjoy" what actually happens during the calibration run? Is Calman making changes/adjustments to the Radiance mini or somehow directly to the projector? I'm trying to understand what the autocal actually adjusts during its run.
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post #11 of 14
3/27/13 at 3:46pm
Thread Starter 
All of it is happening inside the mini and with the calman software, laptop, meter. I just finished my 4th calibration and it really couldn't be easier. I now have two modes in high lamp and two in low at 2.2 and 2.3 gamma which did make a noticable differance in detail and picture quality. Also the mini does all the work in displaying the images for the autocal process.
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post #12 of 14
3/27/13 at 3:49pm
Quote:
Originally Posted by Tnedator View Post

Is Calman making changes/adjustments to the Radiance mini or somehow directly to the projector? I'm trying to understand what the autocal actually adjusts during its run.

To use the radiance for generating patterns or to use AutoCal you connect your laptop to the radiance with a serial cable. During the AutoCal processes we read and write the calibration data to the radiance in a closed loop sequence where we verify the calibration data we calculate. When the sequence finishes we tell the radiance to permanently save the updated configuration.
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post #13 of 14
3/27/13 at 3:56pm
As I understand it the mini is capable of these 124/5 fine point adjustments and the software comes pre-programmed to measure-record-adjust-measure each of these in rapid succession and I assume the calibration part is done and you are left with an awesome picture. But I think, I'm not sure, I think that the software can also take this data and generate a reloadable profile 3d lut.....or something....actually lets just rephrase the entire post as a question cuz I'm not sure on any of it lol

Sent from my ADR6300 using Tapatalk 2
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post #14 of 14
3/27/13 at 4:00pm
Quote:
Originally Posted by nodixe View Post

As I understand it the mini is capable of these 124/5 fine point adjustments and the software comes pre-programmed to measure-record-adjust-measure each of these in rapid succession and I assume the calibration part is done and you are left with an awesome picture. But I think, I'm not sure, I think that the software can also take this data and generate a reloadable profile 3d lut.....or something....actually lets just rephrase the entire post as a question cuz I'm not sure on any of it lol

Sent from my ADR6300 using Tapatalk 2

That all depends on the software you use and how you generate the data.

Currently with CalMAN, you have to re-run the process if you wish to create a LUT for a different target. Typically the process takes around a half an hour, so it's not too painful to calibrate for multiple targets.
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