The scene is lit by a set of fluorescent lamps, and as can be appreciated the source it is positioned in the back of the character. This creates a perfect and well defined outline of the person even though the source light is not harsh, this effect is created because the enviroment is not lit at all.
At first sight it is difficult to establish is the person is looking towards the camera or looking to the wall, the visibility of the character is practically null in terms of details such as facial expression, such as.
The distribution of the light in the surfaces such as the wall and the floor is spread diverse type because the resulting lights do not exhibit a single direction.
Finally,the scene has a green hue, this could be because a filter placed in the camera but not in the source light.
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http://www.jonpratt.org/