This polarizing filter is used to increase color saturation, darken blue

skies so white clouds stands out, and eliminate reflections from nonmetallic

surfaces like glass or water. It will also reduce the softness in scenery caused by

atmospheric haze. This filter will not change the overall color balance of a photograph.

Most modern SLR cameras use a polarizing half mirror (split beam metering) system and

the circular PL is designed to be used with them.

Filter Factor: 3~4 or 1 2/3 to 2 stops