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Sometimes it is convenient for reading the computer screen if only the reading region is brighter then the rest of the screen.

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3 Answers 3

Technically the answer would be No.

From a hardware perspective this would not be possible since brightness is controlled for the entire display area. This is by design.

Although there are software to control brightness for the whole screen available, I can't find any that will allow you to only select a portion of the screen.

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This answer is true for most monitors out there: the brightness of the display is the brightness of the backlight. However, if you're willing to pay, you can get a display with multiple backlights. I don't know how much software exists that can tune them selectively (the primary purpose of multiple backlights is to have a more uniform brightness). –  Gilles Aug 23 '10 at 21:16

I saw some monitors that have that option but it was accessible only from monitor's menu and not from operating system. I never saw this on notebook's screen but only on stand-alone display.

I had this on Samsung SyncMaster 740N and it was called MagicZone. Personally I used it maybe twice - it is just too annoying to adjust boxes via OSD menu.

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I've got an LG W2361V monitor, and it's drivers/software provide a "cinema mode" icon in my system tray - I click that, draw a box and voilà the rest of the screen dims (to an adjustable amount) and that bit stays lit until I click outside that area.

It's actually quite a nice trick. But, it's not a hardware function, but probably some clever transparent overlay work. Taking a screen shot with Prt Scr results in the outline being visible in the screen shot.

The point is - there's proprietary software out there that will do something like what you ask, so it's possible. Unfortunately, I don't have any suggestions of non-proprietary that can do this, anyone?

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propitiatory software? meaning software that appeases? =P –  Claudiu Oct 20 '10 at 22:37
    
@Cladui Thanks for that. We'll chalk that one up as an "opps". –  DMA57361 Oct 21 '10 at 7:14

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