Madder lake is reported in the literature to have a characteristic pinkish-orange UV fluorescence, both in microscopy cross-sections imaging [1] and UV Fluorescence Photography [4]. Madder lake is the only historical red lake known for showing UV fluorescence. So, its UV fluorescence allows its identification. Though, I never could observe any UV fluorescence in my madder
Working for the Ingels Collection, Sweden, I had the pleasure to examine and document a Madonna and Child painting on panel, Sienese school. The provenience of the painting is uncertain since there is no documentation about its history before the end of WWII when was purchased for the Ingels Collection in Rome. So, the main and obvious issue for
We do run a lot of initiatives, Stay on top of things! Polarized Light Photography eliminates surface reflections and it’s used by professional photographers for high quality documentation of art. The American Institute of Conservation guide to digital photography has in the chapter “Visible Light Photography” a short paragraph on “Polarized Illumination” [1]. This post adds
Sometime before Christmas, Moshe Caine, college professor of Photography, wrote me to ask if I were interested to contribute to his new work, a free electronic ibook for iPad: “Interactive photo imaging”, an interactive textbook for students of photography and interactive media. Of course, I was more than pleased and I provided some material regarding multispectral
It’s useful to measure the output of an Ultraviolet light source when shooting UV Fluorescence and UV Reflected photography. There are a number of UV meters on the market, very expensive. This post is about, as usual, a budget solution that goes for $150 on eBay. UV meter and filters for multispectral imaging. From left