- Use dark blue P020 with daylight film under tungsten lights.
- Use medium blue P021 or light blue P022 with daylight film under halogen lights.
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 colour tones. Blue conversion filters are also perfect for party lights, shop windows and illuminated monument