2 realistic ambient light
2 natural shadow gradients
2 natural photographic lighting
2 subtle ambient occlusion
2 realistic depth of field
2 optical lens characteristics
2 natural color reproduction
2 subtle skin imperfections
2 realistic skin translucency
2 natural facial asymmetry
2 subtle under-eye texture
2 slightly uneven eyebrows
2 natural facial proportions
slightly uneven skin texture
natural variation in hair texture
2 consistent illumination across face and body