I'm not sure what the Michael Hoppen gallery were thinking when they decided to show photographs by Mary McCartney and Robert Bergman at the same time, and I'm not sure what I think either. I liked Mary McCartney's beautiful, personal, subtle photographs of her rich and famous friends quite a lot. This one of Tracey Emin as Frida Kahlo is a triumph. But after going upstairs to view Robert Bergman's visceral portraits of what appear to be street people, my appreciation of the other pictures was eclipsed by a wilder feeling. I'm not convinced that the beauty in the ugly is morally superior to the beauty in the beautiful, any more than I am of the opposite. Perhaps this is precisely the point they were wishing to make. On the whole, though, I think the juxtaposition did Mary McCartney a disservice. Trying to keep the two exhibitions separate, then, I'm very glad to have seen both.