The Heliopan 58mm Digital Filter has been especially designed for imaging with digital sensors. Digital sensors have a significantly higher sensitivity to the infrared spectrum than film material. This filter blocks both ultraviolet and infrared light. The result is improved color separation, saturation and sharpness. The UV protection blocks the UV radiation found in daylight. Color rendition is improved, especially in the blue and red channels of your images. Since artificial light contains especially high IR radiation, this filter ensures better control of the blue channel. This dichroic coated specialty filter should not be used with extreme wide angle lenses.