THE SOUTH AFRICAN May’s Black and White Supplement * David Goldblatt’s Joburg is on show at the Goodman Gallery until 24 May. Page 2 How rare will it be today for an artwork to evoke such passion? If only! brilliantly used in a good artist’s hand. Incidentally, the photographer Yousef Karsh of Ottowa’s black- and-white photograph of Winston Churchill, taken in1941, is one of the iconic images of the last century. Photography, somehow the Winston Churchill, (1941). By Yousef Karsh. Alex Emsley