On Apr 23, 2005, at 10:32 AM, Robert Rolf wrote:

> Newer LCD monitors are now specifying response time in addition to
> contrast ratio and pixel count/pitch. I see adverts for 'super fast 8 
> ms'
> displays since gamers want a fast responding display, so 125Hz refresh
> seems possible now.
>
But as far as I know, active matrix LCD display leave the pixel at the 
last
state until it's actually changed; it's not like a CRT where the 
electron
beam has passed on and all that's keeping the pixel there is phosphor
persistance.  At least, the "decay" time is MUCH longer than the 
"update" time.

For that matter, the problem with CRTs is not so much that people can 
perceive
the 60Hz flicker, but that you get "beat" effects with 60Hz lighting...

BillW


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