Fig. 1From: Perception of frontal facial images compared with their mirror images: chirality, enantiomorphic discrimination, and relevance to clinical practicePhotographs taken at different focal lengths: a 24 mm, b 90 mm, c 135 mm. Altering the focal length of the camera lens can change the resulting image. A camera with a 70–90 mm lens will provide the most “true to life” photograph of a patientBack to article page