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Scientifically, when a picture is in focus, it is supposed to be sharp. There are, however, faces with rubber-like features (and here I am inviting criticism) which somehow or other never look sharp. No matter how sharp the picture looks around them, their faces always look out of focus. The best we can do (and I am speaking from experience) with these problem faces is to use a strong cross-light. This produces deep shadows, creating somewhat of a contrast.
