David Hockney: modern master of colour

David Hockney painting "The Road to Thwing, Late Spring", May 2006
Photograph: Jean-Pierre Gonçalves de Lima

Felled Trees on Woldgate 2008 oil on two canvases 60 X 96" overall Photograph: David Hockney / Collection of Museum Wuerth, Kunzelsau, Germany

Three Trees Near Thixendale, Summer 2007 oil on 8 canvases Photograph: David Hockney

Three Trees Near Thixendale, Winter 2007 oil on 8 canvases Photograph: David Hockney

David Hockney Painting "Woldgate Before Kilham" 2007
Photograph: Jean-Pierre Gonçalves de Lima

Untitled, 6 January 2011, 1 iPad Drawing of a foot and a shoe
Photograph: David Hockney

Untitled, 13 November 2010, 1 iPad Drawing of a cap
Photograph: David Hockney

Untitled, 6 August 2010 iPad Drawing of a lamp by a window
Photograph: David Hockney

Pearblossom Highway 11-18th April 1986 (Second Version)
Photograph: David Hockney / Collection of the J. Paul Getty Museum, Los Angeles

David Hockney and Martin Gayford at Bridlington Studio, 20 April 2010
Photograph: Jean-Pierre Gonçalves de Lima