A week ago I posted about
Internet Explorers's scaling of graphics on my widescreen Dell.
The problem comes when IE draws images, IE scales images upwards. For example;
Whilst going through the new Microsoft blog entries last night
(RSS feed) I read
Omar Shahine's post
on his new high density display. He points to an
article on DPI, which contains the registry tweak which controls IE's scaling. The
that the IE tweak affects both text and graphics scaling;
Internet Explorer 6 and later solves these problems by proportionally
adjusting the scale on displays with higher resolution.
When scaling is activated on a 192 dpi system, for example, an HTML element
that has a specified height and width of 250 pixels has a scaled height and
width of approximately 500 pixels.
192 DPI / 96 DPI * 250 pixels = 500 pixels
So this explains why images in IE look bad. There was hope however, the article also
gave the registry entry which controls the scaling tweak;
If you delete the key or set the value to 0 and restart any IE instance you have
open scaling no longer happens and graphics look like they were supposed to. You may
find that because text no longer scales up that some web sites, especially those with
fixed font sizes specified in pixels are not readable. Another Microsoft blog has a
fix, Tony Schreiner
a way to add a context menu option to increase font sizes.