The Ultra Key in Première Pro is a way of quickly and efficiently ‘Green/Blue Screening’ or ‘Chroma Keying’ footage elements shot against a coloured background. In this second tutorial Andrew goes on to show how to use the Ultra Key settings and how you can use presets to help understand how certain parameters work. Andrew goes on to show how to deal with edge issues and then how to use another effects to simulate a ‘light wrap’ effect which brings the colour of the background into the edge/alpha channel of the keyed object. Andrew finishes by showing how to deal with parts of the matte that have become semi-transparent during the keying process