Cokin Z122 Square Graduated Blue B1 Hard FilterEnhance Your Landscapes with the Cokin Graduated Blue Filter The Cokin Z122 Graduated Blue B1 filter adds a touch of blue to the sky in your landscape photos, enhancing dull or hazy conditions. Its hard edge transition is perfect for scenes with a defined horizon line. Specifications Brand: Cokin Model: Z122 Type: Graduated Blue Filter Filter Series: L (Z) Series Density: 1 2 3 Stop Transition: Hard Size: 100mm x 150mm Shape: Rectangle