In a low key image dake tones dominate the photograph. Bright highlights punctuate the shadow areas creating the characteristic mood of a low key image. The position of the key light source for a typical low key image is behind the subject (or behind and to one side). This creates deep shadows. The strong back light captures spectacular hilights around the rim of the subject. Selective fill light is ten used the increase the subject brightness range to a level that will give an average expsoure. The decision concerning appropriate exposure usually centres around how far the exposure can be reduced before the hilights appear dull (underexposed). The shadow areas are usually devoid of detail when this action is taken unless a certain amount of fill is provided. The lighting ratio is relativly high compared to high key (8:1).
Butterfly Lighting..
Is achieved by positioning the main light directly in front of the subjects face and adjusting the height to create a shadow directly under, and in line with,the nose. This style is best suited for subjects with a normal oval face and is considered to be a glamorous style of lighting best suited for women, It is not recommended for use with men because it has a tendancy to highlight the ears - creating and undesirable effect.
Rembrandt Lighting..
Rembrandt lighting is obtained by combining short lighting and butterfly lighting. The main light is positioned high and on the side of the face that is away from the camera. This technique produces and illuminated triangle on the cheek closest to the camera. The triangle will illuminate just under the eye and not below the nose.
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