Cokin A21 Dark Blue Conversion/Cooling Filter (80B) A-Series

• Cokin Blue conversion filters supress or greatly subdue the strong orange tones due to tunsten or halogen lighting. • They replace the flat uniformity of flashlight photos with an intimate and atmospheric lighting, with sculptured shadows, without altering color tones. • Blue conversion filters are also perfect for party lights, shop windows and illuminated monuments. • Use dark blue A020 with daylight film under tungsten lights. • Use medium blue A021 or light blue A022 with daylight film under halogen lights