The RA's new exhibition Johan Zoffany RA: Society Observed opens to the public tomorrow.
Following on from our earlier video on Zoffany's The Tribuna of the Uffizi, here's curator Martin Postle on the story behind the exhibition's poster image, The Sharp Family:
Image credits: The Sharp Family, 1779–81. Oil on canvas, 115.6 x 125.7 cm. By courtesy of the National Portrait Gallery, London, and the Lloyd-Baker Trustees