An unusual exhibition in Dulwich digs into photography’s roots through pictures of plants, while tech wizardry is on show at the National Gallery – all in your weekly dispatch
Unearthed: Photography’s Roots
This unusual exhibition tells the history of photography entirely through botanical and landscape images, from Henry Fox Talbot’s beautiful experiments with what he called “the pencil of nature” to Robert Mapplethorpe’s fleurs du mal.
• Dulwich Picture Gallery, London, until 9 May.