The secret life of the stills photographer

With Antonia QuirkeWhat exactly does a stills photographer do on a film set ? Keith Bernstein, whose CV includes American Sniper and Argo, reveals the secrets of his trade.Director Edward Watts reveals how he worked with film-maker Waad Al-Khateab to shape the 500 hours of footage she had shot during the siege of Aleppo into a 100 minute documentary called For Sama, that's won awards across the world.Neil Brand reveals the original score for Love Story, and why Francis Lai was brought on board after Burt Bacharach and then Jimmy Webb had been sacked.