After a four month run at the Royal Academy an utterly intriguing exhibition of photographs by the late American actor, film director and artist Dennis Hopper closed at the weekend. It was called The Lost Album and featured more than 400 original prints of photographs taken by Hopper between 1961 and 1967. These images had last been seen at his first major exhibition at the Fort Worth Art Centre in Texas in 1970. They were rediscovered, packed away in a series of old boxes, after his death from cancer in 2010.