Introduction to Keylighting Green Screen in Ae

In this tutorial we were introduced to Keying out a Green screen using footage provided. To help us with this we were also given a guide of step by step processes and approximate values to input to achieve the best result.

I was surprised at how quickly a well lit green screen could be keyed out as I had expected the process to be more complex. By selecting the colour of the green screen with the Colour ink dropper in the Keylight Effect the green screen keys out, leaving extra adjustments to be made to the footage, such as Clipping the Blacks and Whites and applying a Simple Choker. Creating a garbage matte around the green screen deletes anything extra in the footage and can be animated around the subject to facilitate movement.

We touched on how to make the footage fit the background such as adjusting the tint (in this case making the green screen composition blue). Creating this highlights the importance of adding little effects to blend the elements of the scene, or example this composition would be improved through adding shadow and perhaps bubbles and movement in the still image.