Editing Don't Look Now (section)

=== Filming ===
The drowning scene and house exteriors were filmed in Hertfordshire at the home of actor [[David Tree]], who also plays the headmaster at the son's boarding school.{{sfn|Sanderson|1996|pp=17–19}} Shooting the sequence was particularly problematic: Sharon Williams, who played Christine, became hysterical when submersed in the pond, despite the rehearsals at the swimming pool going well.  A farmer on the neighbouring land volunteered his daughter who was an accomplished swimmer, but who refused to be submerged when it came to filming. In the end, the scene was filmed in a water tank using three girls.{{sfn|Sanderson|1996|pp=74–75}} Nicolas Roeg and editor [[Graeme Clifford]] showed the opening sequence to some friends before filming resumed on the Venice segment, and Clifford recalls it making a considerable impression.<ref name="Gregory (2002)"/>

The Venice locations included the Hotel Gabrielli Sandwirth—the lobby and exteriors standing in for the film's fictional Europa Hotel, although the Baxters' suite was located at the Bauer Grunwald (which better accommodated the cameras)—and the [[San Nicolò dei Mendicoli]] (the Church of St. Nicholas of the Beggars), located on the outskirts of Venice. Finding an appropriate church proved difficult: after visiting most of the churches in Venice, the Italian location manager suggested constructing one in a warehouse. The discovery of San Nicolò was particularly fortunate since it was being renovated and the scaffolding was already in place, the circumstances lending themselves well to the plot of the film. Roeg decided not to use traditional tourist locations to purposefully avoid a travel documentary look. Venice turned out to be a difficult place to film in, mainly due to the tides, which caused problems with continuity, and the transporting of equipment.{{sfn|Sanderson|1996|pp=19, 71–73}}<ref name="Reeves (2011)"/>

Filming the scene in which John nearly falls to his death while restoring the mosaic in San Nicolò church was also beset by problems, and resulted in Donald Sutherland's life being put in danger.  The scene entailed some of the scaffolding collapsing leaving John dangling by a rope, but the stuntman refused to perform the stunt because the insurance was not in order. Sutherland ended up doing it instead, and was attached to a [[kirby wire]] as a precaution in case he should fall. Some time after the film had come out, renowned stunt co-ordinator [[Vic Armstrong]] commented to Sutherland that the wire was not designed for that purpose, and the twirling around caused by holding on to the rope would have damaged the wire to the extent that it would have snapped if Sutherland had let go.<ref name="Cousins (2001)"/>

While many changes were due to the logistics of filming in Venice, some were for creative reasons, the most prominent being the inclusion of the love scene. The scene was in fact an unscripted last minute improvisation by Roeg, who felt that without it there would be too many scenes of the couple arguing.<ref name="O'Hagan (2006)"/> The scene set in the church where Laura lights a candle for Christine was also mostly improvised. Originally intended to show the gulf between John's and Laura's mental states—John's denial and Laura's inability to let go—the script included two pages of dialogue to illustrate John's unease at Laura's marked display of grief. After a break in filming to allow the crew to set up the equipment, Donald Sutherland returned to the set and commented that he did not like the church, to which Julie Christie retorted that he was being "silly", and the church was "beautiful". Roeg felt that the exchange was more true to life in terms of what the characters would actually say to each other, and that the scripted version was "overwritten", so opted to ditch the scripted dialogue and included the real-life exchange instead.{{sfn|Sanderson|1996|pp=76–78}}

The funeral scene at the end of the film was also played differently from what was originally intended. Julie Christie was supposed to wear a veil to hide her face, but prior to filming Roeg suggested to Christie that she should play it without the veil and smile throughout the scene. Christie was initially sceptical, but Roeg felt it would not make sense for the character to be heartbroken if she believed her husband and daughter were together in the afterlife.<ref name="Gregory (2002)"/>