Sargy Mann at work in his studio. Photograph by Peter Mann

Even before he lost his sight, Sargy Mann was obsessed with ways of seeing. As a young painter he was tutored by singular realists – Frank Auerbach, Euan Uglow – who insisted that an individual artist must be exactly true to what he saw. For much of his working life Mann taught students at Camberwell School of Art all he knew about representing light and colour on canvas, with particular reference to Bonnard and Matisse, and he put all of that complex understanding into practice in his own, often gloriously sun-drenched landscapes and interiors. Like all painters, he suggests, he felt he knew instinctively what science was then in the process of discovering: that the eye was an entirely passive collector of visual stimuli, and that “seeing” was a learned activity that went on in different, discrete parts of the brain – the imaginative piecework of collating form, and colour, and light into an understandable vision of the world, one you constantly made up as you went along.