And many website programs will automatically convert your scan to 72 dpi,
because thats the way all pics are displayed on the web.
John Hermanson
___________________________________
Camtech, Olympus Service since 1977.
21 South Ln. Huntington NY 11743-4714
631-424-2121 http://www.zuiko.com
Free Olympus Manuals: 1-800-221-3000
___________________________________
----- Original Message -----
From: Lex Jenkins <lexjenkins@xxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Saturday, July 08, 2000 8:57 PM
Subject: Re: [OM] New pictures: butterflies and Thailand
| Erwin, if you're scanning prints for your website there's really no need
to
| scan at greater than 240-300 ppi. More doesn't equal better. In fact,
| scanning at 100 ppi will result in screen size images nearly equivalent to
| the original prints. So a 4"x6" print scanned at 100 ppi will deliver a
| screen sized image measuring only a little larger than 4"x6" on most
| monitors, at an actual resolution of 400x600 ppi.
|
| Unless you're wanting to scan at higher resolutions for archival purposes
or
| for printing, this will save you a lot of time and trouble. And
relatively
| low compression will still deliver excellent quality JPEGs.
|
| Another trick is, as a last step after any other image editing such as
| resampling, color correction, etc., is to apply unsharp masking or some
form
| of sharpening. This smooths out spikey histograms. No point in applying
| unsharp masking earlier in the process because it'll have to be repeated
| later, which can produce excessive noise.
| -----------
| Lex Jenkins
| -------------------------------------------------------------
| Visit "Vistas Tejas" at http://www.photoscene.com/lexjenkins/
| <a href="http://www.photoscene.com/lexjenkins/";>Visit Vistas Tejas</a>
| ======================================================================
|
|
| >From: Erwin Voogt <erwin.voogt@xxxxxx>
| >
| >The pictures are scanned with the Agfa Snapscan 50e at 1200 DPI, which
| >results in images of about 1600x1060 pixels. For the web pages the
pictures
| >are reduced in size to 800x530 or 400x600, with a severe jpeg
compression.
| >It is hard to find a good balance between image quality and image size...
| >
| >http://members.xoom.com/_XMCM/photovoogt/index.html
| >
| >Bye,
| >
| >Erwin Voogt
| >Utrecht, The Netherlands.
|
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