Director 'Tanya Wexler' stated that the hardest shot to get for the movie was of two ducks mating. After filming hundreds of hours of ducks with nothing to show for it, they finally got the shot they needed when someone found a video on YouTube.
The newspaper photograph of Doctor Granville is taken with flash powder in a flash pan. The story takes place in 1880 and flash powder was not invented until 1885.
The film suggests that the Granville Electric was the first mechanical vibrator. While it pioneered the use of electricity in the vibrator, hand-cranked models existed before the Granville.
When Emily and Mortimer are sitting on a bench towards the end of the film, a few drops of rain or dew from a leaf land on the Mortimer's coat, resulting in a few spots of moisture which disappear and reappear in subsequent shots.