表情はポートレートの印象を決定づける要素です。この記事では8種類の表情をプロンプトでどう指定するかを、実際の作例画像付きで解説します。
1. 明るい笑顔
明るい笑顔
portrait of a beautiful Japanese woman in her 20s, genuine bright smile showing teeth, sparkling eyes, long black hair, wearing a cream knit sweater, warm cafe background, natural window light, 85mm lens, candid photography
表情キーワード: genuine bright smile showing teeth, sparkling eyes — 歯を見せた自然な笑顔 + 目の輝き
2. 真剣・思索
真剣・思索
portrait of a beautiful Japanese woman in her 20s, serious contemplative expression, looking slightly away from camera, long black hair, wearing a dark turtleneck, minimalist grey background, soft studio lighting, 85mm lens, editorial photography
表情キーワード: serious contemplative expression, looking slightly away from camera — 視線を外すことで思索的な印象
3. はにかみ
はにかみ
portrait of a beautiful Japanese woman in her 20s, shy gentle smile, slightly tilted head, looking up at camera through lashes, long black hair, wearing a soft pink blouse, cherry blossom background, spring sunlight, 85mm lens, portrait photography
表情キーワード: shy gentle smile, slightly tilted head, looking up at camera through lashes — 首を傾げて上目遣い
4. 大笑い
大笑い
portrait of a beautiful Japanese woman in her 20s, laughing with eyes closed, head tilted back, carefree joy, long black hair in motion, wearing a yellow sundress, bright outdoor setting, golden hour, 50mm lens, lifestyle photography
表情キーワード: laughing with eyes closed, head tilted back, carefree joy — 目を閉じて頭を反らした大笑い
5. ミステリアス
ミステリアス
portrait of a beautiful Japanese woman in her 20s, mysterious half-smile, intense eye contact, long black hair, wearing a black leather jacket, dark urban background with bokeh lights, dramatic lighting, 85mm lens, fashion photography
表情キーワード: mysterious half-smile, intense eye contact — 強い視線 + 半笑いでミステリアスな印象
6. 驚き
驚き
portrait of a beautiful Japanese woman in her 20s, surprised expression, wide eyes, slightly open mouth, long black hair, wearing a casual denim jacket, colorful street market background, natural daylight, 35mm lens, street photography
表情キーワード: surprised expression, wide eyes, slightly open mouth — 目を見開き口を少し開ける
7. 安らかな寝顔
安らかな寝顔
portrait of a beautiful Japanese woman in her 20s, peaceful sleeping expression, eyes closed, relaxed face, long black hair spread on pillow, wearing a white cotton top, soft morning light through curtains, 50mm lens, intimate photography
表情キーワード: peaceful sleeping expression, eyes closed, relaxed face — 目を閉じたリラックスした表情
8. 集中・決意
集中・決意
portrait of a beautiful Japanese woman in her 20s, determined focused expression, sharp gaze at camera, long black hair tied in ponytail, wearing athletic wear, gym background with blurred equipment, overhead lighting, 50mm lens, sports photography
表情キーワード: determined focused expression, sharp gaze at camera — 鋭い視線で決意を表現
表情指定のコツまとめ
| 表情 | 主要キーワード | 補助キーワード |
|---|---|---|
| 明るい笑顔 | bright smile showing teeth | sparkling eyes |
| 真剣 | serious contemplative expression | looking away from camera |
| はにかみ | shy gentle smile | tilted head, looking through lashes |
| 大笑い | laughing with eyes closed | head tilted back, carefree |
| ミステリアス | mysterious half-smile | intense eye contact |
| 驚き | surprised expression | wide eyes, open mouth |
| 寝顔 | peaceful sleeping expression | eyes closed, relaxed |
| 集中 | determined focused expression | sharp gaze |
組み合わせのヒント
表情は照明や服装と組み合わせることで効果が増します：
- 笑顔 + ゴールデンアワー → 暖かく幸せな印象（照明別プロンプト集参照）
- ミステリアス + サイドライト → ドラマチックな印象
- 寝顔 + 窓光 → 親密で柔らかい印象
関連記事
- ポーズ別プロンプト集 — 12シチュエーションの作例
- 照明別プロンプト集 — 照明の比較実験
- グラビアプロンプト集 — 水着・ランジェリー系
- プロンプト設計の考え方 — 5要素分解の思考法
