CurtPalme.com Home Theater Forum

**kal** · Posted: Tue Jun 03, 2008 5:26 pm Post subject:

DeltaE is a numerical representation of how far your measured x/y point is from the actual x/y point on the CIE chart.

Kal

Scott_R_K · Joined: 30 May 2008 Posts: 17 Location: Rockwood , Ontario

Hi Kal ,

Don't know what happened to the Pic I posted in my last Post . It was there after I Posted it and today it's gone . Was it too large ? Was it removed ? Don't want to break any rules this soon Confused

Just when I felt someone could help me with this .

Scott..................

delphiplasma · Joined: 06 May 2008 Posts: 14

Thanks Kal, but I'm still a bit in the dark.

The CIE chart will show that my calibration for 'Red' primary matches exactly with reference Primary red, however, the Delta E, for red, is around 19?

On another forum, I've been told to exclude luminance from the Delta E readings. When I do this the Delta E value concurs with the CIE chart.

So, is the reading excluding 'luminance' more correct?

The thing is, is that the colour is definitely under-saturated when the saturation is set for as closer match to the CIE reference chart, red isn't 21% of white etc...

When I do adjust for Red for 21% of white, then the CIE chart is further off the mark in terms of colour saturation. But the colour looks better, all program material looks good. Also, the Delta E value is better with Luminance, but not as good without Luminance when compared to the results which were set to match the reference CIE chart.

**kal** · Posted: Wed Jun 04, 2008 3:21 pm Post subject:

puremind · Joined: 07 Jun 2008 Posts: 2

In your guide you mention the EyeOne sensors and describe how they compared to the Spyder II sensor.

What about the DTP-94, which can be ordered from Integrated Color Corp:
http://www.integrated-color.com/cedpro/dtp94.html

Many people say it is still the best sensor on the market, even though distribution is now limited to online ordering. Have you got experience (even second-hand) with this sensor and how would you rate it?

**kal** · Posted: Sun Jun 08, 2008 12:18 am Post subject: Re: EyeOne versus DTP-94

puremind · Joined: 07 Jun 2008 Posts: 2

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

**kal** · Posted: Sun Jun 08, 2008 12:35 pm Post subject: Re: EyeOne versus DTP-94

timf · Posted: Mon Jun 09, 2008 1:52 pm Post subject:

Kal,

In your guide you mention that the green is used as a reference for the blue and red to be adjusted against when setting greyscale, if the green tube is "off" and not calibrated correctly is there a way to initially set this back to what is considered normal before using as a reference point.

I'm dancing all over the place trying to set my greyscale correctly and I'm pretty sure my green tube is not projecting the correct level of green, i'm getting horrible green/blues and extremely bright reds/oranges even though my inital adjustment on the high end scale has all three at or very close to 100% each.

when taking the first set of readings before adjusting red was something like 300%, Green 3% and blue 250%...way off from being correct.

**kal** · Posted: Mon Jun 09, 2008 3:28 pm Post subject:

timf · Posted: Mon Jun 09, 2008 6:01 pm Post subject:

Thanks Kal,

Yep it's my BD808s, I dont think its a problem with my PJ, it 's more a problem of me mucking around too much with the trimpots and not knowing what i'm doing properly Sad

I've tried setting G2 by looking into the lens but the green tube still glows even if the G2 trimpot is turned all the way down, can this be set by checking the voltage, if so what is the correct voltage all 3 tubes should get, 2.5v or is it more?

**kal** · Posted: Mon Jun 09, 2008 6:07 pm Post subject:

I don't know. I would take this to the CRT projector forum and ask there... as it's getting completely off topic.

Kal

delphiplasma · Joined: 06 May 2008 Posts: 14

Hi All,

Just one query, regarding the calibration of the Eye One sensor.

It has been advised to place it on a flat black surface. I'm assuming that the calibration is required to set the black level of the sensor? If this is the case, then, I would presume, all you need to do is place it in a black bag or a fully darkened box? It shouldn't matter that the surface is flat, so long as no light gets to the sensor?

Is this correct?

I have to say that I have not seen any real difference in measurements from when I use to calibrate the sensor on front of the plasma screen compared to shutting it in a black bag?

**kal** · Posted: Fri Jun 13, 2008 4:20 pm Post subject:

heelsfinl4 · Joined: 14 Jun 2008 Posts: 8

Kal: Thanks for the terrific stet by step calibration process. I plan on trying to calibrate my next set in this method. I have one problem though. I currently own a Sony XBR1 lcd tv and I will be purchasing a Sony 52w4100 LCD tv in the very near future. After looking through both owner's manuals, I can't find any access to individual color controls (RGB high end and RGB low end) on either tv's. This appears to be a very important to the calibration process. Is there some way I can access these, and if I can't, does that mean I can't calibrate this tv? Thanks in advance

**kal** · Posted: Sun Jun 15, 2008 12:19 am Post subject:

heelsfinl4 · Joined: 14 Jun 2008 Posts: 8

Thanks for the reply Kal. My current Sony does not have invidual red.green and blue color controls. Am I correct that this is what RGB high end and RGB low end is? I do think the Sony 52w4100 that I am going to purchase has these controls after all. If that's the case, it looks like I'll be able to calibrate it. I just need to order the calibrator from Amazon.Thanks, and I'm sure this isn't the last question I will have for you!!!

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

heelsfinl4 · Joined: 14 Jun 2008 Posts: 8

My point was that these controls would be easily available to me on the new Sony. I'm not expert enough to try and dig around in the service menu. It would appear the new Sony has all the controls Ineed to calibrate the set without entering the service menu. Thanks