{ "image_type": "影棚人像", "composition": { "framing": "紧凑的头部与肩部特写", "camera_angle": "平视视角", "orientation": "竖构图", "symmetry": "近乎完美的中心对称", "focus": "焦点清晰对准眼睛和面部特征", "depth_of_field": "浅景深，背景完全虚化" } }