The LEE Filters SW150 Circular Polarizer Filter helps in capturing beautiful, saturated photographs. This non-coated filter is made from optical glass to make images clearer and more colorful. The polarizer filter lets you determine the polarization degree by simply rotating the filter holder where it is placed. When using the polarizer filter, reflections and glare from non-metallic surfaces are cleaned out from the image. The filter factor of the SW150 ranges from 2.8 to 4×, which results in decreased exposure from 1.5 to 2 stops. You may use this polarizer filter when taking landscape photos to get clear distant shots without haze. The polarizer filter offers maximum effect when it is at a 90° angle from the sun, and is ideal to use with digital cameras and autofocus lenses.