Article View: comp.lang.postscript
Article #5115Re: Setscreen, again
From: Jeff HINSCH
Date: Thu, 21 Mar 1991 09:59
Date: Thu, 21 Mar 1991 09:59
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1437 bytes
In article <1991Mar17.220700.19388@neon.Stanford.EDU> Tomas G. Rokicki writes:
>On a low resolution device, the Level 1 screen for any gray scale will
>give you identical `dots' across the page---this tends to look good.
>With accurate screens, the dots will very; every other dot might be one
>pixel larger, for instance. This can create detectable patterns in
>what should be a single gray scale. These go away as soon as the
>resolution increases enough so that a single pixel enlargement in a
>screen `dot' is undetectable. Of course, at high resolutions, the
>default screens become more accurate, too.
I'm experiencing "detectable patterns" with Level 1--more like
obvious patterns--when imaging 4-bit color Mac or Windows
screens that use a dither to simulate a color. These patterns
refuse to go away. I'm enormously cheered to hear that Level 2
will only compound my problems.
(Using: RIP 4/L300)
Jeff Hinsch
--
{uunet, decvax, uw-beaver}!microsoft!jeffhi
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!olivea!uunet!microsoft!jeffhi From: jeffhi@microsoft.UUCP (Jeff HINSCH) Newsgroups: comp.lang.postscript Subject: Re: Setscreen, again Message-ID: <71427@microsoft.UUCP> Date: 21 Mar 91 09:59:19 GMT References: <1991Mar17.220700.19388@neon.Stanford.EDU> Reply-To: jeffhi@microsoft.UUCP (Jeff HINSCH) Organization: Microsoft Corp., Redmond WA Lines: 24