Portrait of Colombian physician Samule Roa at an outdoors event: 1boy, solo, age:75, old man, elder man, male focus, gray hair, straight hair, brown eyes, thick gray eyebrows, straight nose, clean-shaven, shaved, smooth face, blue shirt, gray cloth jacket, kind expression, (close-up:1.2), realistic, correct anatomy, vibrant colors, masterpiece, sharp focus, best quality, depth of field, cinematic lighting