was belief that filming might move from the UK, where all previous films were shot. The crew also scouted around Cape Wrath in Scotland, for use in the cave scene. Filming returned to Glen Coe and Glenfinnan, both of which have appeared in the previous films, to preserve the continuity of the landscape. Following a week of rehearsals, principal photography began on 24 September 2007 and ended on 17 May 2008. Radcliffe, Gambon and Broadbent started shooting in late September 2007. Other cast members started much later: Grint did not begin until November 2007; Watson started in December 2007, Rickman and Leung in January 2008, and Bonham Carter in February 2008. On the weekend of 6 October 2007, the crew shot scenes involving the Hogwarts Express in the misty and dewy environment of Fort William, Scotland. A series of night scenes were filmed in the village of Lacock and the cloisters at Lacock Abbey for three nights starting 25 October 2007. Filming took place from 5 pm to 5 am daily, and residents of the street were asked to black out their windows with dark blinds. On set reports indicated that the main scene filmed was Harry and Dumbledore's visit to Slughorn's house. Further filming took place in Surbiton railway station in October 2007, at Gloucester Cathedral, where the first and second films were shot, in February 2008, and at the Millennium Bridge in London in March 2008. Cinematography Due to cinematographer Bruno Delbonnel's use of de-focussing and soft wipes in the digital grade, Warner Bros. asked director David Yates to add more colours to the film. Yates did not want to lose the "very European look" of the film, but after retouching the picture, he said, "It's not what you wanted, but we're happy with it." After five minutes of watching the film, the studio were pleased with the changes. In an interview with Total Film, Yates said that the choice of angles, the extreme close-ups, and the pacing of the scenes made the film "incredibly rich". One of the major challenges for Delbonnel was the lighting of the film. In an interview with the Academy, Delbonnel said that he did not want to change the lighting effects used in the previous films, and finally decided to give it a darker, moody variation of grey. Yates and the other producers supported this new effect, and he went ahead with