Vtg Cokin A021 Medium Blue Conversion/Cooling Camera Filter 80B A-Series France

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 atmospheric lighting, with sculptured shadows, without altering color tones. 
Blue conversion filters are also perfect for party lights, shop windows and illuminated monuments. 
Use medium blue A021 or light blue A022 with daylight film under halogen lights. EUC Original case