Thoughtful Woman Against a Rock in Classic B&W Portrait

Create a cinematic, classic black-and-white portrait of a thoughtful woman leaning against a rugged rock. Use Rembrandt-style lighting with a strong side key that casts dramatic shadows across her face, highlighting her contemplative expression. She wears a vintage mid-20th-century blouse with soft folds; her hair is neatly styled in a timeless bob. The rock texture is sharply detailed, providing a rugged backdrop, while the foreground remains crisp and the background softly blurred. Apply film-grain texture and subtle halos to emulate old studio portraits. The mood is introspective, serene, and dignified, with high contrast and rich blacks, mids, and highlights in monochrome.