Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!mcvax!hp4nl!mhres!hst
From: hst@mh_co2.mh.nl (Klaas Hemstra)
Newsgroups: comp.graphics
Subject: Re: GIF viewers are inconsistent
Message-ID: <3283@mhres.mh.nl>
Date: 23 Jun 89 07:02:55 GMT
References: <5300017@ux1.cso.uiuc.edu>
Sender: news@mhres.mh.nl
Lines: 23

I would like to get to the bottom of this, because I also have had some
strange colours.

I think the problem of the GIF viewers is when the size of the image is larger
than 320 x 200 AND there are more than 16 colours.
Some GIF viewers automatically choose EGA or VGA modes with 16 colours to
display these images. This will result in scaling down the number of colours
from x (mostly 256) to 16, which cannot be done very well. Most likely this
feature causes the inconsistent display of images.
Some of the GIF viewers give you the possibility to manually select the
displaymode, with that You might be able to check whether it is correct for
your pictures and monitors.

Anybody who thinks this is not correct ?
Please mail me with more information about your particular system.
When there are other reasons I will post them.

							Klaas

Klaas Hemstra  (hst@mh.nl)                   |    /  / ,~~~  ~~/~~
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