Compared with the previous Quidditch scenes, as the child star actors have grown up, this time the flying device needs to be redesigned. There are some special devices used to capture high-altitude flight movements, including a device called a "matrix", which can fast-rotate actors or stuntmen on a shaft under very safe conditions. The Quidditch footage was also combined with other equipment, including: a "pole arm", which can be placed on a broom and then manipulated manually or mechanically; a large "Russian swing" that can actually swing people into the air, Make the camera capture people's free fall motion; of course, there are traditional spring pads.
The crew designed a new Quidditch uniform, including training suits, basically like track suits with shoulder pads and leg pads, and wearing leather helmets. Competition clothes are obviously more refined than training clothes, everything is handmade and quite luxurious. The visual effects guide Tim Booker and his team in post-production, digitally add the shawls of the players, so that the shawls are streamlined when they float to add a sense of speed.
The crew of the crew also updated the appearance of the Quidditch Stadium. More tall towers have been added, and the spacing is closer, so that players have more opportunities to shuttle among them, and at the same time, it can also enhance the sense of rapid movement of things swishing at close distances. Of course, there is also a huge bleacher, and the visual effect of all the elements is even more spectacular.
