This filter is ideal for scenes where it is important to differentiate the green tonal values in black and white photography. The application is especially suited to landscape photography because it enhances the light green colour of the leaves. Due to its favourable effect on red tones, it is also suitable for portraits. This filter measures 85 x 85mm and fits the Cokin P series holder. What's in the box 1 x 85 x 85mm Cokin P006 Yellow Green Resin Filter Limited 1-Year Warranty