The Prado Museum current exhibition gives a close look at the technique of one of the most revered artists in the history of drawing and provides an occasion to learn from his example. The exhibition presents itself touches on his complex relationship with the art of portraiture, (the sacred art which has secured his place as one of the great painters of history), torn between ambition and repulsion. The works of Ingres and his very individual aesthetic represent a key movement towards the artistic revolutions of the end of the 19th century and the beginning of the 20th century. He…