Thomas Kumlehn wrote:
I'm not sure if this is related to the P650, but some graphics cards have great 10bit LUTs but bypass them when outputting digitally over DVI, just because they are placed by design between Memory path and DAC and not also between Memory path and DVI chip. Currently no off-the-shelf LCD known to me, takes 10bit per colour channel. All need 8x3bits.
If the design of the card is such that the LUTs are only in the D/A path, then calibration isn't going to work. I'd be a little surprised if Video cards are designed that way (how are gamers going to adjust their gamma ?), but it's certainly possible. Of course DVI makes it impossible/non-standard to use more than 8 bits/component, so an Video cards LUTs will be 8x3 to the DVI. Graeme Gill.