CurtPalme.com Home Theater Forum

David_Web · Joined: 02 May 2007 Posts: 418 Location: Sweden

Or just leave the browser open.

LastButNotLeast · Joined: 15 May 2008 Posts: 13 Location: 08077

delphiplasma · Joined: 06 May 2008 Posts: 14

Hi,

You may, or may not, remember I originally had a gamma problem with my Sony Plasma display. This I have managed to rectify. The problem being with the DVD player. A control, that Sony labels 'DVE' (Digital video enhancement) and is described in the Sony manual as a sharpness control, was the problem. Came by it by accident. I noticed the Grey scale ramp shifting as I moved it from the 3 settings. The control has a distinct effect on the gamma.

Also, I originally posed a question to the forum as to which sensor configuration to use for the following:
Eye one sensor
HCFR Software
Plasma display

After being told to use the 'LCD' setting, rather than the 'Plasma' setting, that I had been using, I set about testing the measurements for the 2 modes.

Both modes show the same measurements for gamma, but when it comes to grey scale measurement, the measurements are very different. What mode should I be using to measure a plasma display?

Thanks

**kal** · Posted: Mon May 19, 2008 3:10 pm Post subject:

Set it to Plasma. See step 1.10 in the guide.

Kal

GGA · Joined: 19 May 2008 Posts: 3 Location: Topanga CA

**kal** · Posted: Mon May 19, 2008 9:12 pm Post subject:

GGA: Thanks for heads up - yes, that should be "how fast the brightness curve comes out of BLACK".

Re: using Rec601 or 709, use 709 if you watch any HD material on the display. It won't matter for the greyscale calibration however, only when you go to measure primaries (the upcoming section that's taking me forever to find the time to write - I'm about 1/2 done so far).

Kal

CRT_Ben · Joined: 28 Aug 2006 Posts: 1684 Location: Northern Virginia

While we're playing editor, here's something I noticed:

"To adjust electronically either use the remote (on newer electrostatic CRT projectors) or the G2 pot (older electromagnetic CRT projectors). See your user manual on how to access this control. "

Electrostatic and electromagnetic should be reversed.

garyfritz · Joined: 08 Apr 2006 Posts: 12026 Location: Fort Collins, CO

**kal** · Posted: Mon May 19, 2008 11:52 pm Post subject:

delphiplasma · Joined: 06 May 2008 Posts: 14

Phew!!! thanks for that, Kal.

Can't wait to see the Primaries/secondaries article!

garyfritz · Joined: 08 Apr 2006 Posts: 12026 Location: Fort Collins, CO

**kal** · Posted: Tue May 20, 2008 4:40 pm Post subject:

Yup.

Been doing more research into it!

Kal

SGN2008 · Joined: 22 May 2008 Posts: 1 Location: THAILAND

Hi Kal,

I've read your GREYSCALE CALIBRATION FOR DUMMIES. I want to calibrate my DLP front projector. I plan to buy Eye-One Display LT. In STEP 1.11 in the guide, I don't see how to put Eye-One Display LT sensor on projector screen, please advise.
You guide is very useful, thanks a lot.

**kal**

Plasmid · Joined: 25 May 2008 Posts: 4

I'm quite surprised this thread is only three pages long.

I came across the grayscale guide a week or so ago. After quickly skimming through it, I felt overwhelmed and decided not to pursue this type of calibration. I already had the DVE blue-ray disc, and even though I wasn't very successful when I used it to try and calibrate my friend's LCD, I thought it was the best choice I had, especially since I wasn't going to spend hundreds of dollars to professionally calibrate my TV.

Last week, I got my own Samsung plasma and started breaking it in. That's when i came across your guide again. This time, I started reading it from the start. I think it was the testimonials that made me realize how simple the steps were presented. I think I only got to the equipment needed section when I rushed to Amazon and order the Eye-One Display LT. I have since read the guide once and re-read a great deal of it. I think I'm fully prepared for the actual calibration, which is great since the Eye-One arrives tomorrow.

It's funny: I'm more excited about calibrating it than I am about watching it.

I plan on taking a few before and after shots to compare and then share on this board. I'm all set, but I have some questions regarding my specific plasma TV:

1. I believe I've located my RBG HighEnd and RBG LowEnd controls, but I'd like to be positive before doing anything. In my picture settings menu, I have some controls under "White Balance." These controls are labeled either Offset or Gain, with each of the three colors corresponding to both. The R-Gain, G-Gain, and B-Gain are, of course, the RGB HighEnd controls. However, am I correct in assuming the R-Offset, G-Offset, and B-Offset are the RGB LowEnd controls?

2. I've turned off all advance settings (i.e. Digital NR, Movie Plus, Edge Enhancement). Should I also leave Black Adjust and Dynamic Contrast off as well?

3. Finally, I have something called My Colour Control, which controls individual Pink, Green, Blue, and White. Should I use this at all? I'm mostly referring to the last part of your guide, Advanced Colour Management. I don't have any options to adjust my set's primaries, so would these help in any way?

Thanks for the great guide and I'll hopefully be back tomorrow with my results.

**kal** · Posted: Mon May 26, 2008 3:20 am Post subject:

LastButNotLeast · Joined: 15 May 2008 Posts: 13 Location: 08077

VideoGrabber · Joined: 09 Apr 2006 Posts: 933 Location: Michigan

Plasmid commented:
> I'm quite surprised this thread is only three pages long. <

I'm not. It's to be expected, when the topic and discussion about it are separated. Proximity fosters a lot more immediate response.

Kal, while I agree with your decision to keep the main Guide topic locked, I really think you at least need to have a link from there over to here. When you conclude with, "Comments/corrections are appreciated! [Topic LOCKED]", it's like, "Huh? OK, where?". Sure, people can track it down, but that shouldn't be necessary. You'll get a lot more feedback if people can get here easily after reading the Guide.

**kal** · Posted: Mon May 26, 2008 3:01 pm Post subject:

I do have a link Tim. In the closing comments section I say:

Plasmid · Joined: 25 May 2008 Posts: 4