On Sun, 2008-12-07 at 08:59 +1100, Graeme Gill wrote: > Leonard Evens wrote: > > But I'm not sure at this point whether or not I should be using the > > ambient light measurement at all. When I calibrated/profiled this same > > monitor last year---I thought successfully---with version 0.8, there was > > no ambient light option. > > That's really up to you. It won't make much difference to the > profiling, but it may make a difference to applications that > are not color managed (video replay ?), where the visual > result should probably take account of the viewing conditions. > > > On another point, whatever I do, I always get a message like > > Failed to meet target 0.600000 delta E, got worst case 0.607690 > > with different worst cases. > > Does this mean anything? > > It means that it's (just) failing to pull the response curve to the target. > > > As I said, it does if I don't use the ambient light option. According > > to the `Amazing Gamma Applet', gamma seems to be between 2.1 and 2.4. > > Since it probably measures gamma differently, I wouldn't expect great > agreement. > > Graeme Gill. I tried using dispcal -v -o ... using my Eye-One Pro instead of the Eye-One LT---I bought the LT first and then decided I needed the second for profiling my printer. I used a slightly different set of parameters and monitor settings, but the Eye-One Pro seems to do a better job. I now have a calibration/profile that looks more reasonable, but I think there is still room for improvement. I could try the more extende approach described in the documentation, but if I understand, it shouldn't make much difference vis-a-vis the calibration LUT which will be loaded in the video card. Am I right about that?