Ultra-detailed, high-contrast monochrome (black-and-white) portrait based on uploaded reference image. Match facial structure, bone structure, eye shape, nose proportions, jawline, beard density, hairline, and facial symmetry precisely. Mature confident man with strong facial structure and deep-set eyes, serious contemplative expression. Preserve skin texture, pores, fine lines. Classic thinker pose with hand raised to chin. Low-key fine-art studio photography with high-contrast sculpting. Soft directional key light from slightly above and left, strong highlights on forehead, nose bridge, cheekbones, beard, and hand. Deep shadows under brow ridge and cheekbones. Minimal fill light. Subtle rim separation on hair and shoulder. Small soft rectangular catchlights. Black background. Tight vertical head-and-shoulders crop, 4:5 ratio.