One light sensor port contains a diffuser and neutral density filter, the other just a diffuser. The pair span a light level sensitivity range of approximately 20-80,000 lux, enough to measure relatively low indoor light levels as well as direct sunlight striking the print surface. The color patches are measured by a spectrophotometer annually at the same time the dataloggers are read out and batteries replaced. A second identical set of color patches remains protected from light exposure underneath the window mat.
Current Status of Our Real-world Digital Print Research
To date, several environmentally monitored picture frames have been placed in real-world locations throughout the United States. An example, contributed by artist Jordan Lewis, is shown in the photos above. This research program is very much in its infancy, more or less a pilot study with help from friends and family. Yet the idea is to build upon our experience tracking the aging of prints in real-world (RW) settings, and to find creative ways to include more participants, more print processes, and new locations in the study. I will keep you posted on the progress and refinements as the research continues.
Thank you for your interest,
Mark H. McCormick-Goodhart
Director, Aardenburg Imaging & Archives