We hear about how a painting of Cupid in one of Johannes Vermeer's greatest masterpieces, in Dresden, was long thought to have overpainted by the master himself, but was in fact covered by a later artist. It is now in the process of being revealed, as Vermeer intended. We also learn about the Prado's show where Vermeer appears alongside Diego Velázquez and Rembrandt, among many others. And we talk to Helen Cammock about her Whitechapel show and her nomination for this year's Turner Prize.
• The Art Newspaper Podcast is available every Friday on our website and all the usual places where you find podcasts including iTunes, Soundcloud and TuneIn. This podcast is brought to you in association with Bonhams, auctioneers since 1793.
