Ultra-detailed 3D portrait of Albert Einstein, photorealistic style. Focus on expressive facial features: deep wrinkles, prominent cheekbones, bushy eyebrows, and iconic wild white hair. Gentle, thoughtful expression with slight smile. Aged skin texture with visible pores and fine detail. Subtle lighting highlights facial contours and character depth. Clean UVs, 8K PBR textures optimized for ultra-high-resolution close-up rendering.