What technical elements can a film director manipulate to achieve the final product

Camera movements, camera shot, lighting, sound, pratical and special effects, and the sets.

Explanation:

Every single aspect of the film is the director's concern. To create emotion, fear, happiness or any kind of feeling, the director needs to understand the language he/she is using to create good camera movements, how to achieve the best shot (wide shot, long shot, close shot), how the light would be used (or which of them should be used), how to use the sets to tell the story (as Hitchcock did in Rear Window, for instance), and several other elements.