Re: 20" Cinema Displays 1024x1600
Re: 20" Cinema Displays 1024x1600
- Subject: Re: 20" Cinema Displays 1024x1600
- From: John Gnaegy <email@hidden>
- Date: Wed, 5 Mar 2003 12:57:11 -0800
Problem is: all the
new screens have a too high native resolution. Unlike the CRTs, the
LCDs
cannot use a lower resolution without displaying a less optimal image.
You're working under that assumption that CRTs don't have an optimal
resolution, but they do, and even then it's not that optimal.
There's a finite dot pitch determined by the shadow mask or the
vertical wires and phosphor dots. So at best there is one resolution
at which each virtual pixel lines up with each physical trio of pixel
generating holes in the mask. But even that isn't optimal, because
each virtual pixel on a CRT is represented by three (or more?) phosphor
dots, and even then they're not lined up exactly except in one
resolution. And, most CRTs don't have a regular dot pitch across or up
and down the screen, meaning the dot pitch can vary from the center to
the left and right sides, and often the vertical dot pitch is different
than the horizontal dot pitch. I followed this line of thought a few
months ago when I was considering buying an Eizo versus a flat panel,
weighing the pros and cons. The variable resolution of the CRT was a
big pro for me until I realised the above, and started looking closely
at some of my favorite CRTs like the 17" Studio Display (the CRT
version that used a Mitsu Diamondtron tube). It's a great tube, really
crisp, but in up close comparison to my flat panel it's nowhere near
the crispness. An LCD at native resolution shows absolutely perfectly
square and regular pixels, and you just cannot acheive that with a CRT.
In practice I agree that an LCD at a non-native resolution is not as
clear as in the native resolution, but you have to compare that to the
behavior of a CRT in which there is no comparable ideal resolution.
There may be an optimal resolution for a CRT, but no ideal resolution
giving perfect pixels. The LCDs appeal to me on this obsessive
perfectionist basis. And in practice they look great.
---
John Gnaegy
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