Posted by Graham Thomas on , last updated

In the second of the "Christmas Lectures" from R&D this year, Quentin Cooper meets Graham Thomas, and is introduced to the incredible retro reflective cloth invented at BBC R&D which has transformed the use of Chroma-Key on set and on location.

In order to see this content you need to have both Javascript enabled and Flash installed. Visit BBC Webwise for full instructions. If you're reading via RSS, you'll need to visit the blog to access this content.