Candid Outdoor Waist-Up Portrait of Young Man on Yacht at Sea

A photorealistic vertical medium shot in exact 720x900 proportions (4:5 aspect ratio), faithfully preserving the framing, scale, composition, and soft late-afternoon natural coastal light of the reference image[span_0](start_span)[span_0](end_span). A handsome young man leans casually against the metal railing at the stern of a boat, strictly preserving the original vertical framing, sky headroom, knee-level crop, railing foreground, and subject-to-frame scale[span_1](start_span)[span_1](end_span). Faithfully preserve his recognizable facial identity: fair-to-medium skin tone, defined jawline, full trimmed dark beard and mustache, dark rectangular sunglasses, side-profile head angle looking toward the left horizon with a calm expression, and textured, wavy dark brown hair styled with natural volume and a tousled quiff[span_2](start_span)[span_2](end_span). He leans back against the silver metal railing, resting his left hand on the bar while seated casually[span_3](start_span)[span_3](end_span). He is dressed in a relaxed, loose-fitting white linen long-sleeve button-down shirt with an unbuttoned casual collar, single chest pocket, and sleeves rolled neatly up to the elbows, paired with relaxed-fit light blue denim jeans; match the loose, relaxed silhouette with natural, lightweight linen fabric drape and subtle creases without making the garments tight or slim[span_4](start_span)[span_4](end_span). The background features an expansive calm blue sea with gentle surface ripples, distant hilly coastlines dotted with coastal architecture, and boats under a clear, soft twilight sky[span_5](start_span)[span_5](end_span). Authentic skin texture with natural pores, sharp focus on the subject, natural coastal daylight color grading, 8K Ultra HD quality[span_6](start_span)[span_6](end_span). Insert discreet watermark in the lower right corner of the image, vertical text (rotated 90°), written "aipromptlabs.online", Calibri Light font, white color with low opacity (semi-transparent), medium size. Extreme sharpness on the face, fabric texture and typography of the letters. Shot on Canon EOS R5, 50mm f/2.8, studio light.