The Cokin P-Series black & white filter kit is ideal for the enthusiast or professional black & white photographer. The kit contains a P-Series filter holder, a P001 Yellow Filter, P003 Red Filter, P004 Green Filter. In landscape photography & B&W mode, the Yellow filter improves the contrasts between clouds & sky. For portrait, it lightens the faces & 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 green is often used in landscape photography & B&W mode, it lightens the nature & especially the greenery scenes (forests, fields etc). Note: You will require a P-Series Adapter Ring to use this kit (sold separately). Check the end of your lens for the thread size & to determine the correct size adapter.