I recently upgraded my video card to a 9500gt 512 with native HDMI out. Now I use my 26" Panasonic HDTV instead of a computer monitor. However, I have one little issue. My screen seems to automatically dim and brighten depending on how much light and dark space is on the screen. For instance, if I pull up a blank white notepad, the screen will dim (quite dramatically). I have all my graphics card drivers up to date. I have the nVidia software installed and took a thorough look through the options, but there were no settings that had anything to do with auto-dim/brighten. This leads me to think the TV is the culprit. Anybody have any ideas about how I can stop this phenomenon? I wouldn't mind the auto-dim/brighten feature, but I am a photographer which requires that I have a monitor with constant (and relatively accurate) monitor brightness, color, contrast, etc. when editing photos.