Article View: comp.sys.amiga.graphics
Article #8756Re: help with jpegging
From: Dennis Lee Bieber
Date: Wed, 20 Mar 1996 06:19
Date: Wed, 20 Mar 1996 06:19
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1986 bytes
In article <Pine.BSD/.3.91.960319133447.22219D-100000@gwis.com> Steve Yee <yeeware@gwis.com> writes:
>
> I have a scanned photo that's 3.7M. I want to use it in Photoshop on my
> Amiga emulted MAC (I use Shapeshifter).
>
> The original is around 3x5. The final size I want in Photoshop is 1.5x2.5.
>
> I'm using IMFX 1.52.
>
> I cropped the photo,then halfed it,then saved as jpeg (90% compression).
> Is this the correct way?
>
Well, since JPEG is a lossy image mode, better to do all your work in
24bit non-lossy formats first, then convert to JPEG.
However, the question re Photoshop is not so simple... You say you
want a final image of 1.5x2.5... But at WHAT DPI? To generate a 256-grey on a
300DPI laser printer will require a line screen of ~20LPI... Your 1.5x2.5
image would be 30x50pixels. 64-grey can use a 60x100pixel image. On a
monitor? How many pixels/inch do you have... (BTW: a 2500DPI image setter
could take ~234x390 pixel image).
--
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Newsgroups: comp.sys.amiga.graphics Path: arc1-ca.pugleaf.net!netcom.com!wulfraed From: wulfraed@kd6mog.netcom.com (Dennis Lee Bieber) Subject: Re: help with jpegging Content-Type: text/plain; charset=iso-8859-1 Message-ID: <wulfraedDoJyx8.9qt@netcom.com> Sender: wulfraed@netcom17.netcom.com Reply-To: wulfraed@netcom.com Content-Transfer-Encoding: 8bit Organization: IISS Elusive Unicorn (Private Amiga System) X-Newssoftware: GRn 2.1 Feb 19, 1994 References: <Pine.BSD/.3.91.960319133447.22219D-100000@gwis.com> Mime-Version: 1.0 Date: Wed, 20 Mar 1996 06:19:56 GMT