Dennis, I agree with you.  My understanding is that TIFF images are
considered to be archival (as archival as a digital image can be) because
they are the most accurate digital versions.  JPEGs, however, are not
because of the loss of color information.  So ultimately I would say that
your choice of TIFF vs. JPEG will depend upon your intended use.  If you are
absolutely certain that your digital images will only ever be used for web
purposes, then go JPEG.  But if your intention in digitizing is preservation
- in other words, you intend to use the digital image in lieu of the
original at times - then absolutely go with the TIFF image.  As Dennis said,
you will always be able to create images in other formats from the TIFF,
including JPEG.

Personally, I think it is very difficult to know what the future will bring
- it is well worth the investment now to do it correctly and with fewer
limitations.

~~~~~~~~~~
Sandra Smith
Museum Collections Assistant
National Trust for Historic Preservation
202-588-6154 voice
202-588-6232 fax

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