What is a portrait? The simple answer to the question, at least as defined by most dictionaries, is that a portrait is a likeness of a person that features the face. If you've seen any early photographic portraiture, you know that these photos rarely presented much more. The long exposures and slow emulsions often necessitated using a head brace, a metal yolk bolted to the back of a posing chair that served to immobilize the subject's head. Typical exposures were many seconds long and success was often measured in nonblurred images.