The depth of view in the first shot of the scene makes us focusing on Katniss because she's about doing something. Before she's about to shoot, camera panning over the audience in the scene watching and waiting for her and as soon as she fails, camera focus back on them laughing and continue their talk. We get a close shot of her facial expression after the failure of the shoot. There are many shot/reverse shots in the scene so we know the objective /subjective point of view from the characters. We can see that Katniss looks at the people back and forth. Even after she hits the red target, nobody seen it and they don't care. So there's another close up shot on her showing her madness. Each shot from her looking at them back and forth doesn't last more than 5 seconds to heighten up the tension. Besides we can also see that the second time she looks at the same direction, she focuses on the apple in the pig's mouth and not the people anymore. A long shot with the pig in the middle, a medium shot and a close shot of the pig at last when the arrow hit through the apple in front of the people. A shot of the apple with arrow on the wall then a close up of the man' s face looking surprised. He's looking at the direction where Katniss is standing.
The whole scene looks very serious because of the color/lighting. It's dark cool tone. It gives us a mysterious but serious kind of feeling.
The cuts are seamless because the change from shot to shot is very quick and the continuity editing makes the match on action of Katniss shooting the arrow very smooth.