[WEB4LIB] esolution for scanning images for the web

[Roy Tennant]

Before answering this question it seems to me we should know more
information. For example:

1) will you ever want to, or have the time to, do this again?
2) is it true that you will never wish to provide a higher-resolution
format (for example, for printing or enlargement?)
3) are the originals in your possession so you can get them back again if
you must rescan?

If the answers to *any* of the above is no, then most of the advice
provided to you so far is garbage. I would be perfectly happy to never
digitize something twice, which is why I scan at a high resolution
(300-600dpi), store a "master" version in TIFF format, and produce display
versions from there. In my opinion, scanning for (present) screen
resolution is short-sighted. So, if short-sighted is ok (in instances
where the image will be worthless soon anyway), then scan for the screen.
Otherwise, scan for posterity.
Roy Tennant

On Tue, 17 Aug 1999, Yvonne Reynolds wrote:

> 
> Hi!
> May I ask a very basic question?  Does everyone scan images to be 
> used on the web (slides and photographs) at 72dpi/ppi?  Or do you 
> scan at a higher resolution and then resample?  Pros and cons of 
> either?   Which is the preferred format for storing the images - tiff 
> or bmp before converting to jpeg?
> 
> TIA
> yvonne
> 
> --
> Yvonne Reynolds
> e-mail reynolds at nbict.nbi.ac.za
> Web site manager/ Librarian
> National Botanical Institute, Kirstenbosch.
> Private bag x 7, Claremont 7735, South Africa
> Tel:+27 21-762 1166   Fax: +27 21-762 0646
> http://www.nbi.ac.za
> 
> --
> Yvonne Reynolds
> e-mail reynolds at nbict.nbi.ac.za
> Web site manager/ Librarian
> National Botanical Institute, Kirstenbosch.
> Private bag x 7, Claremont 7735, South Africa
> Tel:+27 21-762 1166   Fax: +27 21-762 0646
> http://www.nbi.ac.za
>