Re: [gentoo-user] switching to LCD monitor

["Walter Dnes" <waltdnes@waltdnes.org>]

On Sun, Jul 24, 2005 at 01:36:44AM -0400, Philip Webb wrote
> 050723 michael@michaelshiloh.com wrote:
> > LCD monitors are fixed-rate,
> > so you have to buy one that has the resolution you like
> > with CRT monitors where you buy the highest resolution
> > and then display at a lower rate if you wish.
> 
> Why would you want to display at lower resolution than the best
> available ?

  "Internet TV", or videos are one reason.  Do you want an animated
postage stamp in one corner of your 1280x1024 display?  Software scaling
imposes a heavy load on the cpu, so hardware scaling is preferable.  As
I mentioned in a previous message, attempting to interpolate partial
pixels hurts image quality.  E.g. going from 1280x1024 to 1024x768 or
800x600 or 640x480 is bad.

  However, you can retain picture quality if you divide the resolution
cleanly by whole integers.  E.g. a 1280x1024 display should be just as
good at 640x512 or 320x256.  Similarly a 1600x1200 LCD would do OK at
800x600 or 400x300.  "xrandr -q" is your friend.

> SUPPORT     ___________//___,  Philip Webb : purslow@chass.utoronto.ca
> ELECTRIC   /] [] [] [] [] []|  Centre for Urban & Community Studies
> TRANSIT    `-O----------O---'  University of Toronto

  Hello from Vaughan, "The city above Toronto"<g>.

-- 
Walter Dnes <waltdnes@waltdnes.org>
My musings on technology and security at http://tech_sec.blog.ca
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