Hilde Lotz-Bauer’s photographs of 16th century sculpture are directly linked with the book projects by the art historian Friedrich Kriegbaum, who headed the Kunsthistorisches Institut from 1935 to 1943. The unpublished original manuscript of his habilitation on 16th century Florentine sculpture is still at the KHI today. For his studies, Kriegbaum deliberately employed the medium of photography in situations in which the observer cannot adequately see with the naked eye. Lotz-Bauer’s detailed photographs allowed differentiated observation and analysis as well as an insight into sculpture techniques. Her photographs of sculptures range from initial photographs with unusual perspectives to detailed photographs, in which the balance between light and shadow remains her photographic achievement alone. Kriegbaum identified the two marble figures “Apollo” and “Narcissus” in the Giardino di Boboli as works by Benvenuto Cellini. Kriegbaum was able to attribute previously unidentified bronze figures in the Bargello and the Casa Buonarroti to Bartolomeo Ammannati and Niccolò Tribolo. He intended to write a monograph on both Michelangelo and Cellini. However, Kriegbaum was killed in Florence in September 1943 during an air raid.