Cinematic 9:16 portrait of a bare-chested man

Cinematic 9:16 portrait of a bare-chested man with dark voluminous hair, a full beard, and piercing light eyes, looking intensely brooding. Hard directional window light casts sharp diagonal venetian blind shadow stripes across his face and torso against a pure black background. Chiaroscuro effect, near-monochrome with warm amber skin highlights. Small dark chest tattoo partially visible. Ultra-detailed skin texture and stubble, photorealistic, 8k. --ar 9:16 --style raw --v 6.0 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.