Smoke gets in her eyes

The UK artist Tacita Deans experience in Los Angeles is the subject of an exhibition that opens at Londons Frith Street Gallery this week (LA Exuberance, 16 September-4 November). The show includes colour lithographs depicting the clouds and vapour trails she found striking in Los Angeles, the organisers saybut no visit to the City of Angels is complete without a tte--tte with the greatest UK expatriate of them all. Dean asked David Hockney if she could film him smoking; unsurprisingl