photorealistic portrait, 65-year-old elderly american male scientist, wearing clean white lab coat, thin-rimmed glasses, gentle and deep eyes, subtle wrinkles and skin pores on face, fine facial details, cinematic lighting, realistic skin texture, shot on kodak 5219 film, american drama realistic style, shallow depth of field, soft side light, subtle shadow, medium close-up, ultra-detailed, 8k, sharp focus 负面提示词：cartoon, anime, painting, illustration, deformed, ugly, blurry, oversmoothed skin, plastic skin, extra limbs, distorted face, bright oversaturated colors, cgi render