“Michelangelo was said to have mixed the pigments for his work and painted the frescos using natural light, and for centuries, the only illumination came through the few windows in the chapel or from candlelight. In modern times, Vatican officials blocked off the windows for fear the sunlight would damage the frescos. In the 1980s, the museum installed a halogen system that emitted low-level lighting to protect the artworks.” Now, things are changing.
source ArtsJournal http://ift.tt/ZkESZw
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