I hear you should have this setting OFF, but I have calibrated multiple times with it on, and off. Im not shure if having it ON is better for this TV. I have a Mitsubishi 52" RPTV HDTV platinum model. The manual says "The contrast in dark scenes is enhanced for better picture quality. Brighter scenes will not be affected. On the Mitsubishi RPTV's do you guys have Black enhancement off or on. I have the setting OFF on my Denon 910 DVD player.