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| DearWebby is actually Helmut Morscher, the CEO of Webby, inc.
Originally the "Tech Support Pits" were reports of the funniest tech support incidents, but over the years the
column gradually shifted to answering tech support questions put forward by the readers of the Dear
Webby Humor Letter.
This collection of computer and web advice was started partly because readers demanded an archive, and partly
because some questions were asked again and again. Each page has a different day's Tech Support Pits column.
Tech Support Pits column from Dear Webby's Humor Letter of
07/22/04: Scanner resolution
Tech Support Pits:
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I finally got myself a scanner. What is the best DPI
resolution to use?
That depends on what you are scanning.
If you are scanning old pictures that may need some fixing
up, use the highest resolution possible. That gives you
more pixels to work with.
If you have reasonably good pictures and just want to use
them on a web page, use medium resolution.
If you are scanning text and want to run it through an OCR
program to convert it to machine usable text, use medium
resoluton in grey scale or black and white. High resolution
may overload your OCR program and even if it doesn't,
it is going to seriously slow it down and it will introduce
more errors than medium resolution.
If you are scanning text for archiving, use low resolution
in grey scale. That compresses the best. However, if you
are going to paste, for example, 12 invoices onto a page,
and then reduce the page, use medium resolution grey scale
for scanning, paste them all together, increase contrast
20% and then reduce the size of the page.
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