DLP and Calibration Disk Question

[Pelican170]

Ok, so when i moved recently, my tv settings were erased so i went to re-calibrate it, but got more involved because the first time i did it half-assed. Anyways, The Brightness i did fine, but for the rest it seemed really really hard. For contrast, i could barely notice when it would clip if at all and also, when trying to do the colors, no matter what setting i did for blue, red and green, they never seemed to match the bars at all and i tried all the settings from 1 - 100. Any suggestions? Is this because of the DLP and Color Wheel??

[CJ P]

Originally Posted by Pelican170

Ok, so when i moved recently, my tv settings were erased so i went to re-calibrate it, but got more involved because the first time i did it half-assed. Anyways, The Brightness i did fine, but for the rest it seemed really really hard. For contrast, i could barely notice when it would clip if at all and also, when trying to do the colors, no matter what setting i did for blue, red and green, they never seemed to match the bars at all and i tried all the settings from 1 - 100. Any suggestions? Is this because of the DLP and Color Wheel??

What disc are you using. I've found calibrating white level and black level on digital displays to be a challenge as well. I like Avia the best and have figured out how to make it work with my LCD projector pretty well.

[Pelican170]

Originally Posted by CJ P

What disc are you using. I've found calibrating white level and black level on digital displays to be a challenge as well. I like Avia the best and have figured out how to make it work with my LCD projector pretty well.

I have the HD video Essentials bluray.. Contrast was a little more challenging also but brightness was easy. Just when doing the colors, no matter how i changed the settings on my tv, the colors just never matched like the video says it should....

[crackinhedz]

try setting PS3 output to Y Pb / Cb Pr / Cr

[CJ P]

Originally Posted by Pelican170

I have the HD video Essentials bluray.. Contrast was a little more challenging also but brightness was easy. Just when doing the colors, no matter how i changed the settings on my tv, the colors just never matched like the video says it should....

Ah... I have the SD of that. I can take a look if I find some free time. I find tweaking the color with Avia to be trivially easy. I basically never use video essentials in general.

[Pelican170]

Originally Posted by crackinhedz

try setting PS3 output to Y Pb / Cb Pr / Cr

ok will do, thanks.

[CJ P]

Originally Posted by crackinhedz

try setting PS3 output to Y Pb / Cb Pr / Cr

What does that do? The link is less than descriptive...

Y Pb / Cb Pr / Cr = Set to output in Y Pb / Cb Pr / Cr. Gee thanks

[crackinhedz]

heres a good post on RGB vs Y Pb/Cb Pr/Cr:

There seems to be some confusion between analog component video (which uses YPrPb), analog RGB (as used with a PC's VGA interface), and the encoded digital video formats used with HDMI. HDMI can provide the video information, in digital, in two alternative forms. In one case it is digitally encoded YPrPb and in the other case it is digitally encoded RGB. Currently 8-bits are used to encode each of the 3 'component" colors (be they either Y, Pr and Pb -OR- red, blue and green). The digital video information for HD video sources, such as Blu-ray, HD-DVD, DVD, Directv, etc., is encoded as YPrPb therefore outputting the video via HDMI in YPrPb format involves the least processing by the source device. Most HDTVs ultimately must process the incoming digital video information into a RGB form because the display device is using red, blue and green (subpixels) to created the color image (be it plasma, LCD, CRT, DLP or LCOS technology). In general it is probably best to use the YPrPb via HDMI format out of the source device and then let the HDTV do whatever processing it needs to do. Some HDTVs (e.g., front projector which are more oriented toword the PC world) may only accept the digital information in RGB format via HDMI (or DVI) and in this case RGB format is the only choice. Also in some cases the processing to do the conversion from YPrPb to RGB may be higher quality within source device than the video processing within the HDTV and in those cases you may get better results using RGB out of the source device.
As for the best setting for the HDMI output on a PS3, I would start of with YPrPb with superwhite on. As for "superwhite" the official spec. for video via HDMI only uses the digital range of 16 to 235 for each of the component video elements (i.e., using 8-bits to encode each of the 3 component colors). In normal mode the PS3 will not pass values above 235 to the display device. Turning superwhite on allows all values up to 255 to be output. This is only significant for discs that actually used values above 235 to encode the video.

As for "RGB Full" via HDMI option on the PS3, at this point it is a poor choice except for displays specifically intended as computer displays. This mode takes the 16-to-235 values (intended for digital video) and maps them to and expanded range of 0-to-255 values for each R, G and B (normally used with computer displays). For HDTVs that do take an HDMI-RGB input and are designed for digital video, not just PC use, the more optium setting for the HDMI would be RGB limited (simply outputs the values 16-to-235 with no mapping involved).