| name | cinematic-composition |
| description | 【导演模式·构图 / Director · Composition】触发词:构图 / 取景 / 三分法 / 景深 / 前中后景 / 引导线 / 焦段 / 留白 / 机位 / composition / framing / rule of thirds / leading lines / focal length。Use when 单格取景构图:主体置三分线交点、前中后景分层、引导线导向焦点、焦段随景别变化、以留白 / look-space 调张弛;画面扁平死居中、视线前无留白时用。 |
| appliesTo | ["taskPlanning","analyzeScene"] |
| priority | 1 |
导演模式 · 电影构图
Overview
取景与构图:三分法置主体、前中后景分层、引导线导向焦点、焦段随景别变化、用留白/视线空间调张弛。
写构图 / 景别 / 焦段 / 机位字段前先查知识库: 先调 search_cinematography_kb 工具查「运镜与结构化描述库」(阿里百炼 RAG:权威运镜术语 + 结构化分镜描述范式),拿库里真实术语与结构范式再落笔,别只凭记忆;工具不可用 / 未配 key 时退回联网检索。
When to Use
- 用:单格如何取景构图、景深与留白处理。
- 不用:跨镜连续性/排序(→ continuity / narrative 系列);锚点与风格质感问题。
COMPOSITION RULES — apply to every panel:
Framing:
- Place primary subject at a rule-of-thirds intersection, never dead center unless intentional symmetry
- Establish foreground / midground / background layers; at least 2 of 3 must contain visual elements
- Use leading lines (roads, gaze direction, architecture) to guide viewer to focal point
Depth & Scale:
- Include a scale reference (human figure, doorway, vehicle) when environment is unfamiliar
- Overlap objects across depth planes to avoid flat collage look
- Vary focal lengths across panels: wide establishing → medium interaction → close-up emotion
Negative Space:
- Leave breathing room on the side a character faces (look-space)
- For tense moments, compress negative space; for calm moments, expand it
Example
Medium shot, 50mm. [char1] at the LEFT rule-of-thirds intersection, facing right with look-space open to the right. Foreground: out-of-focus railing; midground: subject; background: street with leading lines (curb + overhead wires) converging to the focal point. Calm beat → generous negative space ahead of the gaze. (A tense version would crowd the subject to the frame edge and compress that space.)
Common Mistakes
| 错误 | 正确 |
|---|
| 主体死居中 | 置三分线交点(除非刻意对称) |
| 画面扁平无层次 | 前中后景至少 2 层有内容 |
| 视线前无留白 | 朝向侧留 look-space |
