CurtPalme.com Home Theater Forum

akajester · Joined: 09 Jul 2008 Posts: 934 Location: Wisconsin

Thanks for reading this! I went through the grayscale calibration many times now and have reached the graphs below. I have my colors as good as I can get them, but my luminance and gamma are way off. I'm guessing the two are related. I'm driving the barco with an htpc and all settings on the htpc are at defaults. I'm using HCFR and an i1 colorimeter.

If someone could look at these pics and point me in the right direction that would be great. Thanks!

Gamma

Luminance

RGB Levels

akajester · Joined: 09 Jul 2008 Posts: 934 Location: Wisconsin

After thinking about this more, would this be a brightness or contrast issue? I wonder if decreasing the brightness would slide that curve to the right more, thus eliminating the early peak at 80% gray. Thoughts? Thanks!

AFryia · Posted: Wed Jun 24, 2009 6:37 pm Post subject:

I'm thinking a contrast issue or RGB gain issue which are essentially the same. Greyscale tracking looks good. Are you de-focusing Blue?

akajester · Joined: 09 Jul 2008 Posts: 934 Location: Wisconsin

blue isn't defocused. I'll try to check the contrast soon. thanks.

AFryia · Posted: Thu Jun 25, 2009 9:45 pm Post subject:

Chances are that your blue is saturating too soon. Thats typical of CRT. If you defocus blue you will get more output and you may not need to lower your contrast so much.