Straight vs Premultiplied : Understanding Alpha Channels

Straight vs Premultiplied : Understanding Alpha Channels

I am often asked the question “What is the difference between a Straight and a Premultiplied Alpha Channel?” In this tutorial I discuss the differences between a Straight and a Premultiplied Alpha channel.  How to spot the difference and ensure you interpret your files correctly when setting up your composite. I also cover the Straight…