[LINK] CRT and LCD monitors

[Robin Whittle]

In "Re: Blackle: turn Google black to save the planet", Paul
Bolger wrote:

> This may save energy if you are using a CRT monitor, but for LCD's it
> makes no difference whatsoever. 

Maybe some people really are clueless about how LCD screens work
with a backlight

> Is anyone out there actually still using CRTs? We retired the last of 
> our corporate CRTs over a year ago.

Yes.  I am delighted with the IBM P275 Sony Trinitron flat-screen
19.4 (real image diagonal) "21 inch" monitors I bought about a
year ago, for about $180 each.  Thanks very much!

They have two inputs, one of them DVI, but I am currently using
the analogue VGA input.

They are fast (horizontal and vertical scanning frequencies),
clear, quiet (no vertical drive buzz noise), stable, unaffected by
another one's magnetic fields, can do a bunch of resolutions, and
have no directional effects or dead pixels.  Their vertical and
horizontal linearity is great.  Various controls enable the
elimination of pincushion and barrel distortion, and the
convergence at the corners is still very good.

They have no trimpots inside them - which I had never seen before
in a TV or monitor.  They can be tricky to set up in terms of
brightness, contrast etc.  One is better than the other in this
respect.

Not everyone wants more and more smaller pixels.  I prefer a
larger screen somewhat more distant, with 768 vertical pixels.
Any more than that (at least with Windows, I think) and the text
would be too small.

I run 1024 x 768 75Hz on the Windows machine and 1280 x 960 85Hz
on the Linux machine, but both monitors can go to much higher
resolutions, including for Windows 1280 x 1024 75Hz (doesn't use
the full screen) or 1600 x 1200 60Hz, which flickers.

295mm vertical with 768 pixels gives a pixel pitch of 0.384 mm.


I saw a Samsung LCD TV (1366 x 768 26 inch) which uses a new PVA
technology which gives it far fewer problems with directionality:

  http://www.samsung.com/au/products/tv/lcdtv/la26r71bd.asp

  http://en.wikipedia.org/wiki/TFT_LCD#PVA

Ordinary LCDs have such directionality problems that I consider
them useless for photo editing, as well as being highly annoying.

If this, or some monitor like it, had a DVI input, I think it
would be great.  I can't imagine running an LCD from analogue VGA
would give the rock-solid stability and lack of noise which could
be achieved with a digital connection.

The Samsung SyncMaster 275T looks promising:

http://www.samsung.com/au/products/monitors/tft/tvmonitor/275t.asp

1920 x 1200, PVA, 27" wide.  DVI input.  0.303mm pixel pitch . . .
 and it can  plug into a DVD player for watching movies.

Its smaller and larger neighbours in the page:

  http://www.samsung.com/au/products/monitors/index.asp

have smaller pixels (0.270 and 0.250) and and do not seem to be PVA.

  - Robin          http://www.firstpr.com.au