Create an extremely photorealistic and surreal poster featuring a split frontal human face centered in the image. The left half of the face is a detailed, realistic human face rendered in varying charcoal gray tones with natural skin textures, realistic eyes, and subtle lighting and shadows. The right half seamlessly transitions from the face into a vibrant bright yellow abstract pattern, incorporating dynamic geometric shapes, fluid lines, and textured brushstrokes. Use a strict color scheme of charcoal gray and bright yellow, ensuring high resolution and sharp detail. The lighting should highlight the contrast between the realistic and abstract sides, emphasizing the duality and identity juxtaposition