For fine-tuning the contrast of your images in seven levels, from [-3] to [+3]. You can also set the camera to [A] (auto), where it makes adjustments automatically to suit shooting conditions.
Adjusting toward the minus side provides softer image tones; adjusting toward the plus side results in harder image tones.
The minus side is suitable for shooting portraits in sunlight or situations where you might be concerned about blown highlights; the plus side is better for situations such as distant scenes shrouded in mist. * Unless Active D-Lighting is set to OFF, the level of Contrast cannot be adjusted.