Until 16 March, it is possible to see 15 of Sebastião Salgado’s platinum-palladium prints at the Polka Gallery in Paris, all made at Georges Charlier’s Salto Ulbeek laboratory in Belgium. Created by William Willis in 1873, the platinum-palladium technique differs from silver gelatine printing in its wide range of tones, its powerful grey scales and its ability to reproduce three-dimensional shapes and light with finesse. Using scanned negatives or raw digital files in very high definition, the teams at the Salto Ulbeek laboratory divide the tonal range of each image into three analogue negatives. They are then combined to produce exceptional prints on 100% cotton Arches paper, specially formatted to receive several layers of platinum-palladium: two rare and precious metals, more stable than gold and known for their absolute inalterability. @polkagalerie 1. South Sandwich Islands, 2009 2. Anavilhanas National Park, State of Amazonas, Brazil, 2009 3. Damaraland, Namibia, 2005 4. Greater Burhan Oil Field, Kuwait, 1991 5. Kafue National Park, Zambia, 2010 6. National Park Serra do Divisor, State of Acre, Brazil, 2016 #photography #photographie #fotografia #sebastiaosalgado #blackandwhite #noiretblanc #brancoepreto #pretoebranco #platinum #platinumpalladium #platinumpalladiumprint #polkagalerie