Archived posting to the Leica Users Group, 2011/09/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Actually, it's both. The "LED" only refers to the new method of backlighting the conventional image-forming LCD panel. The advance over previous LCD screens is that they used cold fluorescent lamps that provided constant illumination, whereas the LED array is made up of a large number of emitters whose intensity can be modulated to allow for a better dynamic range in brightness. What's important about this is the fact that LCD pixels cannot quite get opaque, so its dark areas cannot get quite black, whereas a dark area in an image on an "LED screen" can have its LED backlight turned off to produce true black. The new generation of "LED" televisions uses this design too. Pure-LED screens, where each colored pixel actually generates the emitted light, are supposed to be the holy grail for TV, smartphone, pad, and computer screens. They're in some cameras, but aren't available in computers or TVs yet except in a few TVs and monitors that feature organic LED (OLED) screens. They're said to produce magnificent images. Sony's OLED TVs are as awesome in price as in performance (17", $3690 at B&H!), and lots of folks are wondering why this particular technology isn't coming down in price so that it can be used in computers at reasonable prices and TVs at contemporary jumbo sizes and competitive prices. ?howard On Sep 4, 2011, at 4:30 PM, Mark Rabiner wrote: > My macbook pro monitor is LED based not LCD. That could be it. > -- > Mark R. > http://gallery.leica-users.org/v/lugalrabs/