As posted earlier, the DIASTOR team conducts a color analysis of a variety of tinted and toned nitrate prints of the famous German expressionist film “Das Cabinet des Dr. Caligari”. In addition to the photographical documentation and tests with various types of illumination (diffuse and collimated, different color temperatures), several analytical methods to determine the dyes and chemical compounds have been tested: Measurements with spectrophotometry, Raman spectroscopy, micro-spectrophotometry, spectral photography, semi-destructive laser ablation ICP, and X-ray fluorescence. The results of these tests will be presented on up-coming conferences.

X-ray fluorescence line-scan: Green Fe, red Ka. By Beat Aeschlimann, ETH Zurich,
Laboratory of Inorganic Chemistry.