CurtPalme.com Home Theater Forum

WTS · Joined: 08 Mar 2006 Posts: 1221 Location: Calgary

Hi,
Maybe Kal can answer this one considering you wrote the guide for the HCFR software.

I have a question about HCFR and comparing the results from the different graphs and why they differ.
I'm calibrating a 50" plasma using the HCFR probe/software/AVSHD test disc. To start with I do a white balance (Samsung 10pt) using the continuous free measure with expanded scale to get it as close as possible which is pretty bang on according to the readings from 0 to 100ire.
When I then do a greyscale run from 0 to 100ire using the same disc and the same 10 steps of greyscale and look at the gamma and RGB graphs it shows that the white balance is out pretty much thru the whole run.
Now why does the continous free measure show it bang on and the greyscale run which is done right after it shows it's off. Am I doing or using something incorrectly?
Does anyone have an explaination as to why this might be happening.

Patrik G · Joined: 09 Jan 2011 Posts: 4

just a guess

do you have any menus from the tv up when you adjust with the free measure?
if you have close it down and look what happends.

any menu close the the reading window will affect the colours

WTS · Joined: 08 Mar 2006 Posts: 1221 Location: Calgary

Yes there is a menu on display at the bottom of the screen well below the gray scale window pattern. I can't think why that would be causing a problem but I suppose you never know, I'll run it with and without and see if the continoue measure shows any difference.

Patrik G · Joined: 09 Jan 2011 Posts: 4

ok do so and report back

i had problems on my LG 47LX950N (LX9900 in the US)
had to close the menu every time i did an adjustment
but ok the diffrence wasnt huge
max deltaE 1.0 diffrence with menu up vs down.
often the RED color that changed

i used a Display2 meter

**kal** · Posted: Wed Jan 19, 2011 2:21 am Post subject:

I'd try the suggestions the others posted Walter. Otherwise I have no idea - sorry!

Kal

WTS · Joined: 08 Mar 2006 Posts: 1221 Location: Calgary

Okay so I did some more testing. As for the on screen display outside the measuring window, it had no affect on the readings.

I did a continuos measure checking both the measure window and the free measure graph and they are reading exactly the same. So I redid the greyscale and it came out pretty much bang on except there were some variances at a few points same as before. I think it has to do with the HCFR probe, during the continuos measures, after a greyscale pattern change say from a lower ire to the next higher one it takes the probe a while to calm down and stopping jumping around. This erratic signal is what causes the errors when running a greyscale run which explains why it's not consistant from run to run. I did a couple of runs then looked at the bad spots then checked them on the continous measure right away and they were still bang on and not off like the greyscale showed.

I think if the probe had a little longer sample time during the greyscale run then it wouldn't have any problems. Does anyone know how to lengthen the sample times? I looked but can't see any parameter that would do that.

Other than that I'd say the greyscale and gamma came out looking damn good and flat. I bought this TV on boxing day and didn't watch it for over a week while it broke in using the pattern slide show on a stick that I downloaded from AVS. Well okay I watche it a bit, but damn after calibrating this thing I'm amazed at just how good the picture is on this set WOW! Of course I still prefer to watch my Zenith1200pro(Barco Cine 8 Onyx) for the big movies but for oridinary stuff this TV is great, even with Bell HD sat.

Thanks

Kiteboarder · Joined: 11 Feb 2011 Posts: 6 Location: Peoria, IL

Kal:

Will Color HCFR run on Windows 7?

**kal** · Posted: Thu Feb 17, 2011 2:01 am Post subject:

prover · Joined: 07 Nov 2008 Posts: 152 Location: Stuttgart, Germany

Hi Kal,

I am doing some 3D with my 1292 and I need somehow to recalibrate it, the reasons
are well known (tinted glasses, less brightness etc.). Otherwise everything is pretty much off...
Is there some standard procedure for this?

prover

**kal** · Posted: Tue Feb 22, 2011 2:07 pm Post subject:

Alex_DeLarge · Joined: 09 Feb 2011 Posts: 5

What an awesome guide. I learned plenty from Calibration for Dummies.

I've managed to calibrate one of my TV's with successful results. I've not been so successful with the other TV we have. I didn't really find that there was much about gamma calibration in the guide and on the second TV I tried to calibrate I can hardly get the gamma to move. The TV itself has built-in gamma adjustments (1.9, 2.2 and 2.4) which I've tried on each setting, but still can't get the desired level.

Is there anything that I could possibly doing wrong or maybe something that I should be doing?

Any help would really be appreciated. Thanks in advance!

Alex_DeLarge · Joined: 09 Feb 2011 Posts: 5

Also, just another quick question if I may?

I did a calibration on one of my TV's (great results) with the backlight setting at 60%. After reading elsewhere a calibration is ideally done with the backlight right down and should be adjusted accordingly afterwards. I was just wondering if this is the correct method?
As already mentioned I got great results when I checked my 'after graphs' and everything was pretty much spot on. I do have picture improvement, but a little on the dark side and I'd like to brighten it up a notch or two.

Again, help and advice would be greatly appreciated.

**kal** · Posted: Tue Mar 01, 2011 3:28 pm Post subject:

Alex_DeLarge · Joined: 09 Feb 2011 Posts: 5

Thanks very much for the reply Kal, it's much appreciated.

Thumbs Up

**kal** · Posted: Tue Mar 01, 2011 9:42 pm Post subject:

No problems though I'm not sure how helpful it was I'm afraid! Wink

Kal

hellbanker · Joined: 13 Apr 2011 Posts: 2

Hello,
I really want to improve the picture on my Sanyo Plv-z800 but i cannot find anything that tells me low end or high end RGB
nor the other alias you mention. Does anyone know if I can use this calibration mentioned here?

tarad10 · Joined: 04 May 2011 Posts: 1 Location: IN, USA

Thanks for the great guide. I spent several hours calibrating my Samsung plasma and managed to get all of my Delta E's under 3 (except for 0 and 10 IRE which I was OK with).

However, I was wondering if it is normal for your readings to fluctuate when you are trying to get RGB to 100% at 30 and 80 IRE? I expected the readings to stabilize after letting the sensor make 2-3 readings in between changes, but the levels continue to go up and down. It could be one of my other settings (like pixel shift to prevent IR), but I thought I would ask the pro's since it could also just be my naivete since this is my first calibration. I am using the eye-one display 2.

Another possibility (mistake on my part) is that I may have calibrated my sensor prior to letting it warm-up, and then I let it warm-up on the screen. I probably should have recalibrated the sensor after it warmed up, but I read this guide a few times in anticipation before actually pulling the trigger so it is very possible that I mixed up the order on some things Smile

.

Thanks in advance,
Aaron

**kal** · Posted: Wed May 04, 2011 10:57 pm Post subject:

Hi Aaron,

It's normal for readings to fluctuate a bit with cheaper meters, especially at lower light outputs.
If readings are fluctuating at higher light outputs then it may be a problematic meter.

Kal

frankthetoad · Joined: 24 Jun 2011 Posts: 4

I calibrated my new Samsung PN59D550 (plasma) with your software and the i1Display 2. Went beautifully!

I got just about everything near perfect (haven't done the color tweaking yet), but my gamma response is atrocious. At around 60 IRE, it drops off a cliff. I have a gamma setting on the TV, but that just raised the gamma uniformly (i.e., it still dropped off a cliff...just a higher one).

Any ideas on what I could do to get a level gamma response across the entire spectrum?

Ron W · Joined: 07 Aug 2009 Posts: 362 Location: Mississauga