纯白无缝影棚背景，写实风格45岁左右白人男性，面容舒展带有温和浅笑，深棕色自然蓬松中长发，面部带有符合年龄的自然细纹，身着深灰色长袖棉质衬衫、深灰色修身长裤、配有方形金属扣的黑色皮带、黑色简约低帮皮鞋，画面从左到右依次排布：最左侧为胸部以上近景特写、接着是正面全身直立站立视图、左侧面全身直立站立视图、背面全身直立站立视图，正面与背面全身视图面部清晰锐利，左侧面全身视图面部轻度虚化，整体光线为均匀柔和的影棚柔光，阴影浅淡，画质高清写实，人体结构比例准确。

Realistic style reference sheet of a middle-aged Caucasian man in his early 40s, set against a pure white seamless studio background. Arranged horizontally from left to right in the frame: a chest-up close-up portrait on the far left, followed by a full-body front view, full-body left side view, and full-body back view of the man. He has medium-length dark brown naturally tousled hair, calm and gentle facial features, a faint restrained smile, and natural fine lines consistent with middle age. He wears a dark charcoal gray long-sleeve button-down shirt, dark gray slim-fit trousers, a black leather belt with a square metal buckle, and black low-top dress shoes. The front and back views show sharp facial details, while the side view has slightly blurred facial features for natural perspective. Even, soft studio lighting with minimal shadows, high-definition realistic texture, accurate human body proportions.