A programmed auto exposure mode that offers various options such as sport program, close-up and night photography program, allowing you to select the option suitable to your subject and desired effect. They are designed to automatically set the camera s f/stop, shutter speed and, often, auto flash, to produce a balanced exposure of the subject. ri-Programs vary depending upon which D-SLR you are using. In certain Nikon D-SLRs, the Vari-Programs also involve the camera s image processing engine to tailor, for example, white balance, sharpening, tone and hue to the subject. The portrait program s technology, for instance, will set not only a shallow depth-of-field, but also enhance skin tones.