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Article View: comp.sys.amiga.graphics
Article #8756

Re: help with jpegging

#8756
From: Dennis Lee Bieber
Date: Wed, 20 Mar 1996 06:19
30 lines
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).

-- 
 > ============================================================ <
 >   wulfraed@netcom.com  | Wulfraed  Dennis Lee Bieber  KD6MOG <
 >   D.Bieber@GEnie.com   |      FurryMUCK and FurToonia        <
 > ============================================================ <
 >          PGP key: Finger wulfraed@netcom.com                 <
 > Home Page: ftp://ftp.netcom.com/pub/wu/wulfraed/wulfraed.htm <
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From: wulfraed@kd6mog.netcom.com (Dennis Lee Bieber)
Subject: Re: help with jpegging
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Date: Wed, 20 Mar 1996 06:19:56 GMT