CurtPalme.com Home Theater Forum

[chambery]

Using an i1Display LT, trying to calibrate my Samsung PN64D550 plasma.

Started with the 2 Pt WB before I consider hacking the service menu to access the 10 Pt WB controls and advanced CMS.

Using a Panasonic Blu-Ray player, the HD AVS709 disc, the meter and the CHCFR software, I get terrible grey scale readings using the 2 Pt white balance settings. I need to turn Red gain and offset to 50, the highest settings, and Blue gain and offset to 39 and 30 to get the best possible measured red results in greyscale. Blue and Green are right at 100%. but Red is no better than 90% on any greyscale % step. I left Green gain and offset untouched at 25 per the "Dummy" instructions. Then I tried lowering the Greens and that brought the Reds into line, but I lost Brightness levels. So I reset the Greens to 25.

With these extreme red settings, watching content the PQ is too red with skin tones and solid blacks showing a definite red tinge. I tried lowering contrast which did raise Red readings per the instructions but at the expense of the overall PQ, so I returned to the original contrast setting.

Based on the results, I must 1) have a bad meter (brought new and factory sealed but the "no longer manufactured" date is May 2011 and these meters are said to need periodic re-calibration usually annually) or 2) I'm using the meter wrong. The meter does adheres to the screen on its own, because when hanging it with the weight, it flushes to the screen and creates a suction without any pressure applied. This may have an adverse effect but the instructions indicated to let the meter adhere. I calibrated the meter per the instructions at the beginning of the session. I have the display type set to Plasma vs. LCD. I believe I am following the instructions properly, although I have not advanced beyond Part 7: How does your greyscale look now?

I am doubtful that going to the 10 Pt will overcome this problem if the 2 Pt is so far out of whack.

As noted before, the PQ looks excellent (although I think a tad too cool) just using the HD AVS 709 disc to calibrate with the user menu controls and leaving all white balance settings at the default of 25.

Settings are Warm2, everything off, etc., all the suggested base settings, prior to calibration with the meter and software.

Can anyone offer any observations based on your experience with the meter, software, setup and instructions? It seems most were able to make everything work to your satisfaction.

Thanks for any help you can offer.

[razz1]

Well all I can give is with my experience with my first samsung LCD the UN22D5000. I used HCFR and a i1d l/t. I found the greyscale was off so bad with the red, that the user menu greyscale adjustments didn't have enough throw to resolve the issue. I had to drop the red in the SM then fine tune in the user. Its possible it's a metet issue, but I feel samsung doesn't. really spend much time with factory adjustments.

[donnymac]

NOt sure what Panasonic player you are using but make sure it is in "Normal" picture mode. ON the display your contrast needs to be between 88 and 95. Brightness should be in the mid to high 50's.WIthout contrast at those high settings your greyscale and gamma will be hell to adjust. Reset the 2 pt. and take readings of the greyscal ein each color temp mode Use the one that is closest to 6500k. That should be warm2. This will result in the least amount of adjustment in the 2 pt. Good luck. Hope this helps.