散景
讓失焦光點呈現由鏡頭與光圈形狀影響的模糊光斑，作為背景層次而非主體。
散景 AI 影片提示詞
Seedance 2.5 提示詞
傍晚的花園前，一名繫著髮帶、戴著墜飾的女子面向鏡頭，輕輕轉頭。 遠處的樹與草地融成柔和的大片色塊，花園裡有幾盞小燈亮著。 散景：固定機位的近景，她的眼睛、臉、頭髮與服裝保持清晰，背景是很淺的景深，遠處每一盞小燈都變成邊緣柔和的大圓形光斑，作為背景的層次而不搶過人物。 聲音包含傍晚的蟲鳴與微風。
MiniMax H3 提示詞
5 秒，16:9。傍晚的花園前，繫著髮帶、戴著墜飾的女子面向鏡頭輕輕轉頭。散景：人物清晰，背景景深很淺，遠處的小燈變成邊緣柔和的大圓形光斑，樹與草地融成柔和色塊。近景 [static]。聲音：蟲鳴、微風。
以上是參考寫法，實際使用時請依照自己的鏡頭設計調整。
文字：fuse 技法研究 · 示範：fuse 內部生成素材（角色 Shami · 背景 夜間開闊草地）
沒技法有技法分割線會自動來回移動，也可以直接拖曳比較。
效果對照
基準近景裡，Shami 身後的草地、樹叢與遠方燈位仍看得出形狀。散景版本保持眼睛、頭髮與衣領清晰，遠處環境大幅柔化，原有燈光化成柔軟光斑。前後距離被清晰度拉開，視線集中到臉部，背景燈點則提供柔和氣氛。
沒技法有技法示範圖片送出的提示詞
Render only this one edited view from the selected accepted A. Keep Shami's eyes, face, complete ears, hair strands, ribbon, pendant, shoulder edges and costume crisply readable at the identical size and position. Apply strongly shallow optical depth of field to the distant garden behind her, so trees and grass merge into smooth broad color masses with no distinct leaf or fixture-frame detail. Each of the same seven distant compact light sources becomes a large soft-edged round optical bokeh disc centred on its original luminous core, clearly visible around and behind the portrait at gallery thumbnail size. Make the near-sharp/far-blurred separation visually emphatic; a subtle blur is insufficient. Let distant sources form believable varied disc sizes according to depth, but keep their original light colors and brightness relationships. Do not add sources, halos, bloom, foreground glow or white fog. Preserve Shami exactly and keep her silhouette naturally separated from the defocused background. One of the existing seven lights is hidden behind Shami in A and must stay hidden; do not create a new visible disc for that occluded lamp or let background lights show through her opaque silhouette. Preserve the partial occlusion of any source at her hair edge.
散景在影片裡的作用
夜景對話或人物反應近景可用散景把遠處燈點留作氣氛，同時讓觀眾先看表情，不必讀清整個背景。正反拍要延續背景燈的位置、光斑大小與焦點距離，才像發生在同一個地方。
這些寫法也適用於圖片生成模型。
