Depending on how big you may want to print them out in the future, you can
scan them at 100DPI and get good results. I would then try to save them as
bmp's or tiff's - the resulting files will be larger in storage size than if
you saved them as a jpg - but the final quality will be a little better.
Photograph size picture at 100 dpi will take up somewhere around 2-5
megabytes depending on what format you same them as. If you save them as JPG
(which will have good quality) the file size will be under 1 megabyte. I
guess it all depends on how many you want to put on a CD. Most CD's now hold
close to 700 megabytes of info. So you would be able to get at least 140 or
so images on one CD.

As far as what to look for in a scanner, most scanners you will find, even
if they are older will do just fine. Some may take longer to use than
others, but the end result will be close to the same. If you were making
life size images, or converting to 35mm for film then you would want to scan
at a higher resolution, but for what you explained, I think the above will
be adequate.


Hope this helps


----- Original Message -----
From: "Bobbie" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, March 13, 2002 8:53 PM
Subject: images on CD


> Hi-
>
> I have a technology question. I have asked a number of people where I
live,
> but I don't seem to be running into any knowledgeable computer people. So
> here goes.
>
> I am working on an education program with some local 4th grade teachers.
We
> (the historical society and the teachers) are collaborating on choosing
> artifacts and photographs that will help the teachers cover some specific
> aspects of local history.
>
> One of the teachers suggested that instead of having copies made of the
> photographs, we just scan them and burn them onto a CD. That way the
> teachers could project them, or the kids could choose which ones they want
> to use for the small exhibit they are going to develop using the resources
> we provide and print them out. The teachers will also have them for next
> year and won't have to worry about wear and tear on actual photographs.
>
> So, does anyone have technical recommendations? The images don't have to
be
> museum exhibit quality, but they should be reasonable. I know it makes a
> difference what the size of the original image is and what size you decide
> to print it out at, but I'm not sure what that difference means in terms
of
> the scanning.
>
> What resolution should we scan at? Do we save them as TIFF files?
>
> I have never even seen a CD burner, so I also don't know whether CDs can
be
> formatted to be read by both PCs and Macs. If they can, what is the format
> called?
>
> We will probably not have access to a really high quality scanner, since I
> don't think we will have a lot of money to work with. I'm hoping to find a
> scanner in the school system or the local college that will be adequate
(and
> free). What should I look for?
>
> This is a pilot project to see if we should continue to develop more
similar
> materials on local history.
>
> Thanks.
> Bobbie Scott
>
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