Medium shot at eye level, 50 mm prime lens, f/1.8, ISO 320, 1/125 s. Primary light: a low-key tungsten bulb with barn doors positioned 45° camera-left at chest height, producing a split-light effect — left side of her face warmly lit, right side in gradual shadow falloff. Secondary light: a vertical red neon tube two meters behind her to camera-right, its glow refracting subtly in her hair and creating a faint rim… Show full prompt