I would say that I would be much more concerned about the heat on the glass bed
of the flatbed scanner than the light exposure. Those beds get pretty hot after
multiple scans and this can do an awful lots of damage by activating dirt on
the surface of the photograph or causing chemical reactions within the
substrates.
This can easily be alleviated by running two imaging rigs so that one is
cooling as the other is imaging so the bed stays relatively safe heatwise but
this comes with obvious added workflow complications plus space and hardware
implications.
Best,
Simon
____________________________________________
Simon Tanner
Department of Digital Humanities
Room 219, 2nd Floor Drury Lane
King's College London
Email: [email protected]
Twitter: @SimonTanner
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Frank
Kennedy
Sent: 23 January 2015 16:51
To: [email protected]
Subject: Re: [MCN-L] Digitizing Photographs
As was passed on to me by the NEDCC, the light exposure from a flatbed scanner
is similar to having the original object on exhibit for one day. With that in
mind, you can decide. A camera copy stand will likely use powerful incandescent
lights which are highly damaging, but for such a brief time that the result is
the same - like one day on exhibit. LED lit type scanners produce very little
UV light and the scanning can be considered harmless. As others have pointed
out, be careful with handling and the forced flattening of any curled prints
which will crack the gelatin. We've scanned many thousands of old B&W prints
this way. Personally, I find the results from a flatbed visually superior to
the results from high-end photography, with the added benefit of no skew or
fisheye..
Frank Kennedy, IT Manager
Norman Rockwell Museum
9 Glendale Rd., PO BOX 308
Stockbridge, MA 01262
413-931-2216, fax 413-931-2316
http://www.nrm.org
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