Ultra-realistic studio portrait of a sophisticated African man

Create an ultra-realistic vertical 4:5 premium studio portrait of a sophisticated dark-skinned African man with short neatly faded black hair, a precisely groomed full black beard and moustache, and a calm, serious, confident expression. He looks directly into the camera with strong eye contact and wears oversized contemporary transparent rectangular eyeglasses with thick clear crystal frames and clear lenses, plus one small minimalist silver hoop earring. Dress him in a soft pale butter-yellow premium knitted crew-neck sweater with visible fine knit texture, ribbed neckline and cuffs, worn over a crisp white formal shirt with the white collar clearly visible. Add a perfectly centred solid black necktie beneath the collar and emerging through the sweater neckline. POSE IS CRITICAL: create a tight chest-up composition with him leaning slightly forward toward the camera and BOTH FOREARMS CROSSED horizontally across the lower foreground, one overlapping the other naturally. His hands are mostly tucked beneath the opposite arms. Keep his shoulders broad and relaxed and give his head a subtle tilt while maintaining direct eye contact. Use a seamless dark charcoal-grey studio background with a subtle lighter gradient behind his head fading darker toward the edges. Use soft professional beauty/editorial lighting from slightly camera-left, gentle fill, realistic eye catchlights and subtle rim separation. 85mm portrait-lens aesthetic, shallow depth of field, extremely sharp eyes, natural deep-brown skin with visible pores, individual beard hairs, realistic clear glasses, detailed yellow knit fibres, premium personal-brand photography, intellectual modern-academic mood, quiet authority, photorealistic 8K editorial quality. Avoid: full-body shot, standing pose, smiling with teeth, sunglasses, black glasses, missing tie, missing white collar, V-neck sweater, neon yellow, blazer, uncrossed arms, hands on chin, busy background, distorted arms, plastic skin, CGI, text, logo or watermark.