ART: THE FIVE BEST SHOWS IN LONDON

1

Bridget Riley Serpentine Gallery

The classic Op period: paintings from the 960s and 970s, blazing and shifting in black, white and magically elusive and illusive shades of grey. To 30 Aug

2

Disasters of War Imperial War Museum

Three ages of European war through the etchings of Jaques Callot, Goya and Otto Dix. Black-and-white flashes of horror, mass-executions, madness and blood everywhere. To 26 Sept

3

Chuck Close Hayward Gallery

The original painter of the very big face, analysed into pixel fragments. Work from the photorealism of the 960s to the current tesserated, bright-candied images. To 9 Sept

4

Morandi & His Time Estorick Collection

Nineteen of his table-top paintings, with their close and nervous families of bottles, jugs and pots - plus work by contemporaries. To 9 Sept

5

Francesca Woodman/Hellen van Meene Photographers' Gallery

Portraits of young women absorbed. Woodman, who died at 22, presented herself, van Meene does her friends - young, rural and Dutch. To 25 Sept