低机位让主体更有压迫感或力量感，高机位则会削弱主体的支配感。构图时先锁定视线方向和画面重心，再用前景、线条与留白引导观众，而不是把主体永远放在正中央。 Low angles can add power or pressure; high angles can reduce dominance. Establish the eyeline and visual weight first, then use foreground, leading lines, and negative space to guide attention instead of centering everything.