Originally Posted by fallengt
I have 2 question :
1- In pattern B1 - Flashing Primary Colors. There're 2 secondary colors at the top and bottom of each primary color bar, do we use them to adjust primary colour's tint? (Magenta/Cyan for Blue' tint)
Yes, in an ideal display with an ideal filter that's the way it would work. Personally I don't have much faith in the accuracy of color filters on various digital displays. My point is that you may be better off leaving tint at the default setting if all you have are color filters. A color filter built into the display may or may not be better than typical blue filters (the Samsung blue mode measurements I've seen have looked good).
2- I use PC to calibrate my HDTV( through HDMI cable) to watch television mostly, which settings in the ATI catalyst driver should I choose:
a. Limited RGB (16-235) Pixel Format and video Dynamic range 16-235. Or:
b. Full Range RGB (0-255) Pixel Format and video Dynamic range 16-235
In PC mode, black level Low by defauft (adjustable) when watching cable television it's Auto and greyed out.
Assuming that the 'television' signal uses typical video levels, you would want to feed the TV calibration video with a similar signal that's also at typical video levels. If you only have one device, especially if it's a computer, it's difficult to say for sure what levels you're outputting. I've seen ATI driver issues that cause the same settings to output different levels depending on the type of video (mp4 and mpeg2 didn't match). Basically what I do is to compare the output of different video players to get an idea what sort of levels a device is outputting. In theory a comparison is essentially what calibrators should be doing when they use a signal generator for calibrating other devices.
If I want to output video levels from my computer I leave the desktop at 0-255 and force the video player to retain video levels. Like I said I also have other devices that I can use for comparison. I would guess option 'b' would relate to what I use, but if you cannot answer this general question for yourself you may need better feedback elsewhere. Since I do think many people are interested in trying to use one device to calibrate other devices, it wouldn't hurt to try starting a thread on the topic to better cover some of the potential issues with such an approach.