Message-Id: <mailto:199504190413.XAA12449@library.wustl.edu> Date: Tue, 18 Apr 1995 21:15:25 -0700 From: Mike Betz <mailto:betz@WLN.COM> Subject: Re: Scanning newspaper clippings To: Multiple recipients of list IMAGELIB
On Sun, 16 Apr 1995, Misha Schutt wrote:> The most basic question is, is there a generally-accepted preservation
> standard for b/w images such as newsprint? Grayscale is not an issue, of
> course, since the photos are already halftoned. Since we have over a million
> items, file size is a significant consideration. Maybe I'm naive, but it
> seems that there would be diminishing returns at higher resolutions than 300
> dpi, since newspaper printing is quick and dirty to start with.
Generally, 300 dpi is the standard for images, 200 dpi for text.
> We plan to use large grayscale monitors for viewing the images, and we expect
> to use 17-inch monitors so that an 8 1/2 x 11 page could be viewed
> vertically. Does anyone have experience with clippings on this type of
> monitor? Can you read newspaper print at actual size, or do you have to blow
> it up to avoid eyestrain? Is there perhaps a viewer that can use grayscale
> onscreen to approximate a higher resolution? (I know that some fax viewers
> use grayscale to reduce the visual "blockiness" of low-res fax images.)
I have no experience with monitors, but I believe that 300 dpi would surpass the capabilities of the display.
Mike Betz mailto:betz@wln.com