L5 Recap

Recap

Congratulations on completing Lesson 5: Green Screen Productions!

In this lesson, you learned...

1. The basics of green screen production, how and why they are used.
2. Why green screens are green and when they are blue.
3. The pros and cons of using a green screen.

A few things to remember:

• A green screen is usually green because the color green does not have shades in common with human skin tones. Additionally, the lens of a camera is the most sensitive to green wavelengths, making it easier than other colors to remove.
• Productions still use blue screens in scenarios with low light because the color blue has a lower luminance. This means it is easier to illuminate and there is less chance of color spill.
• Color spill occurs when the color of the chroma key background is reflected onto the back of the actor/subject. This makes the keying process (the post-production process of removing the green screen background) much more difficult to do and therefore, should be avoided.