Does the D21Zsaud firmware upgrade for the 2910 address what Ray Adkins is referring to in his review? The following is taken from Ray's review;I was able to obtain perfect Blacker than black and perfect whiter than white with all three of the monitors I used. However, shadow detail was not correct; I reselected 7.5 IRE and then calibrated black level using the setup menu in the display devices rather than the DVD player. I have been told that the current firmware upgrade has corrected the 7.5 IRE black level gain and is available to all current owners of the DVD-2910. Note that you can see the change made to the image because the picture setup menu is minimized when you adjust a specific item.