The people in this German artist's paintings are almost always depicted lying down. Are they sick, dead or dreaming? The textures are soft, the colours hazy, but the bodies could be in wartorn Sarajevo or Iraq. At the David Roberts Art Foundation, W1, until 17 December 2011
Photograph: Courtesy of the artist and David Roberts Art Foundation
These two films bearing the same title by Albanian artist Anri Sala and Sarajevo native Šejla Kamerić recreate imperilled journeys through Sarajevo's bullet-pocked streets between 1992 and 1996. At 10-12 Francis Street, SW1, until 23 October 2011
Photograph: Courtesy of the artist and Artangel
He's possibly the most influential contemporary painter in the world and this survey, marking his 80th birthday, runs the full gamut of his output – from portraits of his family to images of dead Baader Meinhof members. At Tate Modern, SE1, until 8 January 2012 Photograph: Gerhard Richter
Firstsite reopened last week in its new home. The premiere show, Camulodunum, has an archaeological theme (the title is Colchester's Roman name). Ancient coins and pottery join work by Ai Weiwei (pictured) and land artist Robert Smithson, as well as four major new commissions. On until 22 January 2012
Photograph: Courtesy of the artist and Galeris Urs Meile, Beijing-Lucerne
Rana constructs mosaic-like amazements out of intricate grids of photo fragments, producing works like 2010's Desperately Seeking Paradise II (above). In doing so, he translates an almost transcendent worldview into a language familiar to a culture fixated on categorisation and commercial evaluation. At the Cornerhouse, 1 October to 18 December 2011
Photograph: Ken Adlard/PR
Central to this beguiling show is Shovlin's breakthrough installation, The Naomi V Jelish Archive, a complex display revolving around the unsolved disappearance in 1991 of a 13-year-old child with unusual artistic talents. Is the whole thing a setup? At Tullie House Museum and Art Gallery, 1 October until 27 November 2011 Photograph: PR
Claire Barclay, Becky Beasley and Karla Black (the artist behind 2007's Unused To, above) undermine sculpture's love of the monumental by making theirs out of throwaway materials such as sugar paper, chalk dust and cosmetic cast-offs. At the New Art Gallery until 24 December 2011 Photograph: PR
The first edition of this photographic festival approaches its general theme of "evidence" with a rare curatorial intelligence, using a variety of perspectives by renowned names such as Jeremy Deller and Red Saunders (above). At various venues around the city until 30 October 2011 Photograph: PR
