The cokin black and white kit is ideal for the enthusiast or professional black and white photographer the kit contains p001 yellow filter p002 orange filter p003 red filter and p004 green filter in landscape photography and bw mode the yellow filter improves the contrasts between clouds and sky for portrait it lightens the faces and blonde hair at the same time as it softens freckles the red filter is great for creating extreme contrasts especially in the sky for landscapes the gre