Screenshots from an LCD monitor?

[Geoff Hart <ghart -at- videotron -dot- ca>]

John Posada wonders about fuzzy screenshots:  <<Has anyone noticed a 
difference in screen quality when using an LCD>>

Haven't tried taking screen captures of an LCD, but it occurs to me 
that the difference may be in how your LCD communicates with the 
computer and thus, how it passes graphical data. That would be a video 
driver issue. Here's some informed speculation (note the latter word):

The data itself is unchanged, but how it is stored and processed 
changes as a function of the video driver. A traditional analog driver 
(older LCDs) should function identically to the way the drivers for 
CRTs work. However, digital drivers pass data directly to the LCD 
because there's no need to transform the digital data (what your 
computer and video card understand) into the analog data that a CRT 
understands. If your screencap software isn't familiar with the digital 
approach, it may be capturing the screen data at the wrong point in the 
process.

--Geoff Hart   ghart -at- videotron -dot- ca
(try geoffhart -at- mac -dot- com if you don't get a reply)


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