Originally Posted by molfious
Thanks again for all the info. When I get home again tonight I am going to focus on gamma with 2 point only and get that as close as possible. That seems like the best approach. Then I will try and bring the grey scale into balance as you suggested after.
With the color patterns do you use the 75% or 100% patterns?
I was only able to use 2 point on my Sharp set as the 10 point brought 2 point back to defaults. Furthermore the 10 point yielded confusing and horrible results.
Don't be discouraged if you are having a hard time getting every 10% increment below a delta E of 1 like LastButNotLeast was able to. I was able to (after much play) get most of mine under 2 (with the exception of 100%).
I wasn't able to get my colors anywhere near the 100% color saturation points. I had to use 75% color saturation which yielded far better results.
Originally Posted by molfious
Sorry one more question. Where do I get these patterns? Are they on the AVS pattern disc or do I need to get them some place else?
I used my HTPC to display the AVS HD 709 test patterns while my laptop and meter did HCFR. I used the AVS HD 709 MP3 version and stuck with ColorHCFR Windows. For grayscale I used the 10% Grayscale and for changing color (Hue and Saturation) I used the file 75% color.
I included in this post all of the pointers that these helpful gentlemen have given me in the past month:
• The AVSHD709 disk (pattern material) has saturation sweeps in 25% increments. To use them, que them up on your disk just as you did for grayscale and primary/secondary colors, then, in HCFR, go to Measures/Saturations/* From there you can select to measure all colors or just a color at a time.
• You can also use the Rec709 75%/75% color space and HCFR will calculate the targets for you. You can set this color space under Advanced\Preferences and look on the References tab for "Standard" and select HDTV-Rec709 (75%/75%). Only use the 75% space for making adjustments...return the S/W back to the HDTV-Rec709 before you run another set of sweeps.
• You should be able to dial that 100% point's dE down to 3 or below and then it will be very good. My recommendation is to get 100% balanced and then work the rest of the gamma curve around that. Sharp's CMS for the 100% white point only move in one direction whereas they move +/- for the remaining points (which is why I recommend starting with the 100% point).
• To dial in your colors, you should be using hue, saturation, and value. Value is the same as luminance. First dial in hue then saturation then value. They all affect one another, so you'll probably have to go back and adjust hue once you're done getting the luminance set...and so on. .....it's an iterative process.
• Now, with all of that being said, Sharp's Aquos technology has an issue with saturation tracking (cyan appears to be the worst offender) and I can tell you from experience that using a 75% calibration will yield far better looking images than with 100%. I'm still trying to overcome the particularly bad tracking my Sharp has and will be posting up questions on this board soon.
• I don't own a Sharp, but it seems like checking "Use HSV Level Bars" under preferences would be useful (e.g. for color continuous measures).
• If you are using an AVS HD 709 disk you can use the 100% saturation window patterns and use the continuous measurements in HCFR to read Red, Green, Blue, yellow, Cyan, Magenta and white. While the continuous measurements are running you can switch to the CIE Diagram and you will see where the color falls on the chart. Try to get close to the x and y coordinates below. Look at the attached chart it gives you an idea of where to increase hue/saturation to move the points on the x and y axis. Once you get close go back to Measure tab and choose the Primaries and Secondaries view. This will allow you to see the specific x / y values. The delta luminance would probably be controlled by your Gain setting. There you want to be as close to 0% as possible and you can see that on the same Primaries and Secondaries view ( you might need to hit the down arrow on editable data to see this line). Once all the free measures are close you can do a sweep measure of primaries and secondaries to get the delta E. This will give you all the values. Try to get delta E < 3 if at all possible. Good luck!
HDTV - REC 709:
Red primary: x=0.640 / y=0.330
Green primary: x=0.300 / y=0.600
Blue primary: x=0.150 / y=0.060
Yellow secondary: x=0.419 / y=0.505
Cyan secondary: x=0.225 / y=0.329
Magenta secondary: x=0.321 / y=0.154