街角黑白光影的几何瞬间

{ "generation_request": { "meta_data": { "tool": "NanoBanana Pro", "task_type": "street_photography_decisive_moment", "language": "zh-Hans", "priority": "highest", "version": "v1.0_DECISIVE_MOMENT_GEOMETRY_NO_CROP" }, "scene": { "location": "繁忙的城市街角", "time_of_day": "白天", "environment": "仅自然光，无人工照明", "activity": "行人穿过几何感强的背景", "moment_description": "一名行人进入画面，恰好处于运动的最高点，与建筑线条完美对齐" }, "camera_logic": { "lens": "50mm 定焦镜头", "aperture": "f/8", "shutter_speed": "1/250", "iso": "自动", "focus_mode": "手动区域对焦", "focus_distance": "约 3 米" }, "composition_logic": { "approach": "预构图", "geometry_priority": "高", "human_subject_role": "次要于构图，但时机完美", "crop_policy": "不裁剪，画面必须在相机内完整呈现" }, "timing_logic": { "capture_rule": "仅在人物运动的最高点捕捉", "burst_mode": "最少，最多 1-2 帧", "anticipation_based": true }, "style": { "color": "黑白", "contrast": "中等", "tonality": "自然，胶片感", "mood": "宁静，精准，永恒" }, "negative_prompt": "摆拍对象，人工照明，浅景深，剧烈模糊，过度后期处理，电影式夸张，裁剪，变焦镜头效果" } }