In order to cater to the melancholic style of the film, the director arranged a number of rain scenes. Because the story of the film is darker than the previous two, the lighting is also more dull and mixed with more shadows. Director Card used a large number of wide-angle lenses to tell the story. The film crew encountered 28 days of rainy weather during the shooting in Korch, Scotland, which coincided with the shooting requirements and made the whole crew happy.
Bringing the half-eagle, half-horse and half-horse Buckbeak to the big screen can be said to have made the creators take great pains. It took months to complete the blueprint, and it took 1 year to build the model. It took CG to generate the Buckbeak in motion. And the trickiest technique is to coordinate the eagle's feathers with the movement of the body. The three-story "Knight Bus" is another dazzling equipment in the film. The car body is taken from a London bus, and the chassis is remade to withstand the special body. The scene of the "Knight Bus" running on the road at a speed of 100 miles per hour was filmed in London. In the actual shooting, the bus speed was only 30 miles per hour, while the speed of other vehicles had dropped to 8 miles per hour.
