The question of what is more accurate mirror or camera can depend partly on viewing distance. Close-up shots, particularly wide shots can make the nose or forehead appear too large. The further away and the more moderate the focal length the more natural the proportions in the photograph will be, Visuals Clipping recommends that the photographs be shot on level ground and from the same position to minimise differences between the pictures based on perspective.
Visuals Clipping 
