Simulation of Degas's view of his late work. (a) Woman Drying Her Hair (c. 1905) is very roughly drawn. (b) In Degas view, with 20/300 visual acuity at the time, the shading appears smoothed and much more refined. Image details: (a) Pastel on paper (71 × 63 cm). Norton Simon Art Foundation, Norton Simon Museum, Pasadena, CA, USA. (b) Simulation, M F Marmor, after reference 2.