In one scene Harry, Hermione, and Ron are in a coffee shop in the muggle world. They had just escaped Death Eaters (Lord Voldemorts followers) and are planing what to do next. In this post, I will guide you through the scene with pictures.
In this picture, Yates, the director, is trying to make it uncomfortable and cold. You can see that the camera is looking down on them. This is because it makes it look kind of frantic and claustrophobic. For The New York Times, Yates created an anatomy of a scene, in which he talks about why he did and why in the film.
Here (below), there are to Death Eaters dressed as muggles. They turn around and start a battle. Yates wants to emphasise that magic can be dangerous and this fight is more like shooting guns than spells.
In the image with Hermione, we see that she just shot a spell at one of the death eaters, and he is collapsing on the door. The bright light is the glass exploding.
Yates is trying to symbolize blood with all the red. The red doors, the red tables and so on.
In the scene with Ron, Harry and Hermione, they are standing there looking at a knocked out Death Eater. Hermione has to obliviate or erase the memories of the Death Eater which is very dangerous. Yates is trying to show the ending of innocence and having to use magic dangerously, and the wizards we knew when they were eleven are growing up in to very educated young men and women.