Pho tographers who use either a manual or digital SLR camera can enhance their images by using lens filters. There are several types of camera lens filters but four of those most commonly used are the graduated neutral density, polarizing, UV, and haze filters. Each is used for different effects on the final image. Graduated neutral density or split filters are handy for scenes with extremes of dark and light. Sunrises and sunsets are examples. In a sunrise, the sunlight on the horizon can overpower any clouds in the sky. The graduated neutral density filter allows less of the intense light to pass through that part of the filter. By using this filter, clouds in the sky are better defined. The second part of the filter brings out the details and colors in the foreground. Without the filter, the foreground of a scene with a sunrise or sunset is usually dark and shadowy. That part of the filter allows more light in to enhance the foreground. Polarizing filters a...