The “Digital Imaging Workflow for Treatment Documentation” used by the Conservation Division at the Library of Congress is now available online:
https://www.loc.gov/preservation/resources/ImageDoc/
The instructional manual follows the principles in The AIC Guide to Digital Photography and Conservation Documentation (ed. Jeffrey Warda, 2017, 3rd edition) and abides by the AIC Code of Ethics and Guidelines for Practice. The manual is specific to the setup and equipment in the Conservation Division, but the procedures may be adapted for use in other conservation imaging studios. Inclusion of equipment and supplies in the manual is not an endorsement; in most cases similar materials may be substituted.
The manual is divided into three parts:
Primary Workflow - provides instructions for setting up computer and software preferences, image capture using normal illumination, addition of metadata, post-capture image processing, and archival printing.
Secondary Workflow - describes additional imaging modes using standard cameras, including: raking illumination, transmitted illumination, polarized illumination, UVA-induced visible fluorescence, and slide capture using a digital SLR camera; photomacrography (using a stereomicroscope) and photomicrography (using a compound polarized light microscope).
Multimodality Workflow - describes imaging modes using a modified camera (a digital SLR camera with the IR-blocking filter removed), including: visible illumination, reflected infrared, visible-induced infrared luminescence, UVA-induced visible fluorescence, and reflected UVA photography; as well as false color infrared and false color ultraviolet image processing.
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