I calibrated the black levels on my monitors using the pluge pattern in 240p Suite. While they all do show what any of us would consider a true non-gray black, none of them are the 100% pure inky black of a completely dark room. There's always some amount of glow. Sometimes I won't notice I left a monitor on until after I start getting ready for bed and turn off all the lights in my place. That's when I see the faint glow.
I can lower brightness, contrast or RGB levels to a point that the screens are completely black, indistinguishable from being turned off, but as mentioned, you will begin to crush levels at the low end and lose detail in dark/shadow areas... if not a downright overall dark picture. CRTs have amazing contrast beyond any LCDs, but they're not the pinnacle. OLEDs already exceed them at presenting richer blacks, demonstrating that there was room for improvement and CRTs aren't perfect in this regard.
My Nexus 6P has a AMOLED panel. If I display a black wallpaper and turn off all the lights in a windowless room, the phone convincingly blends in with the pitch-black environment. I can stare at a black picture to look at my reflection and turning the screen on and off shows no difference in said reflection. I can't say the same for any CRT I own unless I darken the tube to unnaturally low brightness/contrast. My plasma also has awesome blacks, but still not pure black in a very dark room.
Actually, my BVM under normal lighting has a grayish screen when it's off. Turning it on causes the screen to go black. Doesn't that mean something is being emitted to make this possible?
I can lower brightness, contrast or RGB levels to a point that the screens are completely black, indistinguishable from being turned off, but as mentioned, you will begin to crush levels at the low end and lose detail in dark/shadow areas... if not a downright overall dark picture. CRTs have amazing contrast beyond any LCDs, but they're not the pinnacle. OLEDs already exceed them at presenting richer blacks, demonstrating that there was room for improvement and CRTs aren't perfect in this regard.
My Nexus 6P has a AMOLED panel. If I display a black wallpaper and turn off all the lights in a windowless room, the phone convincingly blends in with the pitch-black environment. I can stare at a black picture to look at my reflection and turning the screen on and off shows no difference in said reflection. I can't say the same for any CRT I own unless I darken the tube to unnaturally low brightness/contrast. My plasma also has awesome blacks, but still not pure black in a very dark room.
Actually, my BVM under normal lighting has a grayish screen when it's off. Turning it on causes the screen to go black. Doesn't that mean something is being emitted to make this possible?