The wet-on-wet oil-painting technique did Jan van Eyck use in Giovanni Arnolfini and his wife that is particular to northern renaissance painting.
Van Eyck and other Northern artists develop the oil-on-panel painting method in the early 15th century. Their work demonstrates the interaction of light with surfaces of various textures. Rich and vibrant colours are preserved practically intact thanks to oil paint. Renaissance artists, frequently used the wet-in-wet (wet-on-wet) technique.
According to legend, underdrawings were used by Jan Van Eyck to produce the Arnolfini Portrait. Before the paint-covered brush made contact with the panel, Arnolfini's hat allegedly had to be drawn over a number of times. Other components of the piece, such the dog, the necklace's pearls, and the oranges, were painted without underdrawings.
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