Tropical Seaside Rock Portrait

Subject: Gaze of the Tide Pool

Main Subject:
Vertical 4:5 photograph. An {argument name="person" default="woman in her 20s"} with a calm, adult atmosphere is placed slightly left of center, sitting in a {argument name="location" default="rugged rocky area by the sea"}. The subject is full-body size, occupying about 70% of the frame. Her left leg is lowered straight into a shallow tide pool, and her right leg is placed on a rock on the right side of the screen with the knee bent deeply.

Character/Expression:
A neat facial feature typical of a natural Japanese woman. A healthy, feminine, well-defined body, long legs, and a supple waistline. Dark brown hair, almost black, tied in a low loose bun, with bangs and thin loose strands left by the cheeks. Her face is turned slightly to the right, with only her gaze returning to the camera. Lips lightly closed, a calm expression where serenity and confidence coexist.

Clothing/Pose:
{argument name="outfit" default="Ivory halter-neck bikini"}. The top has soft gathers and is tied at the back of the neck and back with thin strings. A sheer sarong of the same color is tied on one side of the waist, with the hem hanging naturally along the rock. The upper body is held straight up, and the right forearm is placed on the bent right knee. The subject's left hand is lightly placed on the outside of the right knee, with fingers extended naturally. Naturally represents the contact between the sole and the rock, the weight of the thighs on the rock, and the weight of wet legs.

Background/Lighting:
The foreground is a shallow transparent tide pool and brown coral rocks. In the middle ground are the subject and rocks of various sizes, with dark green tropical plants in the upper left. On the right side of the background is a naturally carved rock arch, through which the blue shimmering sea surface and distant reefs can be seen. Clear day at noon, main light is hard sunlight from the upper right. Bright light hits the cheeks, shoulders, chest, and upper right leg, with deep shadows falling behind the rocks and on the subject's left. Weak blue reflected light from the sea surface is added to the shadow side.

Composition/Camera:
Vertical 4:5, full-body portrait. Camera is almost at eye level from slightly above the waist. Leave appropriate margins for plants and rocks above the head, and capture the feet down to the tide pool. Use the rock hole and blue sea at the top right as secondary eye-catchers, and focus accurately on the subject's face. Equivalent to a medium-telephoto lens, the sea in the background is gently blurred while the irregularities of the rock surface remain clear.

Texture/Style:
High-definition natural light portrait. Skin is not excessively uniform, leaving fine water droplets, natural pores, and subtle shadows from sunlight. Carefully depicts the coarse texture of dry rocks, reflections on wet rocks, and the transparency of the thin sarong. Colors center on ivory, rock brown, deep plant green, and turquoise blue for a refreshing summer palette. A calm photographic expression like a magazine resort feature.

Negative:
Young face, unnatural body shape, extra fingers, missing fingers, fused limbs, joint breakdown, deformed soles, poor contact with rocks, floating, unnatural gravity, incorrect perspective, shadows inconsistent with light source, excessive skin retouching, plastic-like skin, text, logos, watermarks.

主題：
潮だまりの視線

主体：
縦長4:5の写真。{argument name="ロケーション" default="海辺の荒々しい岩場"}に座る、落ち着いた大人の雰囲気を持つ{argument name="人物" default="20代の女性"}を画面中央やや左に配置する。人物は全身が入る大きさで、画面の約7割を占める。左脚は浅い潮だまりの中へまっすぐ下ろし、右脚は画面右側の岩へ乗せて膝を大きく曲げる。

人物・表情：
自然な日本人女性らしい端正な顔立ち。健康的で女性らしいメリハリのある体型、長い脚、しなやかな腰のライン。黒に近いダークブラウンの髪を低めのルーズなお団子にまとめ、前髪と細い後れ毛を頬の横に残す。顔はわずかに画面右へ向け、視線だけをカメラへ戻す。唇は軽く閉じ、穏やかさと自信が共存する落ち着いた表情。

服装・ポーズ：
{argument name="衣装" default="アイボリーのホルターネック型ビキニ"}。トップは柔らかなギャザー入りで、細い紐を首の後ろと背中で結ぶ。腰には薄く透ける同系色のシアーなパレオを片側で結び、布端が岩に沿って自然に垂れる。上半身はまっすぐ起こし、右前腕を曲げた右膝の上へ置く。人物自身の左手は右膝の外側へ軽く添え、指先を自然に伸ばす。足裏と岩の接触、腿と岩の受け止め、濡れた脚の重さを自然に表現する。

背景・光：
前景は浅い透明な潮だまりと褐色の珊瑚岩。中景に人物と大小の岩、画面左上に南国の濃い緑の植物。後格右側には自然に削られた岩のアーチがあり、その穴越しに青く輝く海面と遠い岩礁が見える。晴天の昼、主光は画面右上から差す硬めの太陽光。頬、肩、胸元、右脚の上面に明るい光が当たり、岩の奥と人物の左側に深い陰影が落ちる。海面からの青い反射光を影側へ弱く入れる。

構図・カメラ：
縦位置4:5、全身ポートレート。カメラは腰より少し高い位置からのほぼ平視。人物の頭上には植物と岩の余白を適度に残し、足元は潮だまりまで収める。右上の岩穴と青い海を副次的な視線誘導に使い、人物の顔に正確にフォーカスする。中望遠レンズ相当、背景の海は穏やかにぼかしつつ、岩肌の凹凸は明瞭に残す。

質感・スタイル：
高精細な自然光ポートレート。肌は過度に均一化せず、細かな水滴、自然な毛穴、日差しによる微細な陰影を残す。乾いた岩の粗い質感、濡れた岩の反射、薄いパレオの透過感を丁寧に描写。色調はアイボリー、岩のブラウン、植物の深緑、海のターコイズブルーを中心にした爽やかな夏色。雑誌のリゾート特集のような落ち着いた写真表現。

ネガティブ：
幼い顔、不自然な体型、余分な指、欠けた指、手足の融合、関節の破綻、足裏の変形、岩との接触不良、浮遊、不自然な重力、誤った遠近法、光源と矛盾する影、過度な美肌補正、プラスチックのような肌、文字、ロゴ、透かし。