{ "composition": { "framing": "竖构图人像", "shot_type": "中景（腰部以上）", "camera_angle": "平视视角，略微向右偏转", "subject_position": "画面中右侧", "pose": "四分之三侧身面向左侧，头部转向镜头", "negative_prompt": "..." } }