Cokin H220A P-Series Black & White Kit. Contains Cokin P Series filter holder plus 001 003 & 004 filters. BCokin P001 Yellow Filter BCommonly used for a noticeable increase in contrast with black & white films. Especially useful for clear contrast between blue sky with clouds & foreground. It is also suitable for landscapes & nature scenes. BCokin P003 Red Filter BThis red filter is ideal for strong contrast improvement since it absorbs green & blue completely & enhances red. Clouds are dramatically enhanced almost to the mood of a thunderstorm. It is more effective in cutting through haze & moonlight effects are easily accomplished. It is also suited for infrared photography. BCokin P004 Green Filter BThis filter is ideal for scenes where it is important to differentiate the green tonal values in black & white photography. The application is especially suited to landscape photography because it enhances the light green color of the leaves. Due to its favorable effect on red tones it is also suitable for portraits. NOTE This kit does not contain a Cokin adapter ring.