Green Screen

The Chroma technique can only be applied to backgrounds.

• True

• False

Why do we use the color green?

• you cannot use a primary color

• it is the furthest from human skin tones

• green ink is less expensive

• green is not present in the light color spectrum

The lighting on the backdrop must be _____________.

• minimal

• from a single spotlight

• green

• separate from the lighting on the subject

Another term for green-screen is ___________.

• chroma key

• replacement imagery

• photosynthesis

• cinema allocation

When a different image is keyed in editing, the green color of the screen changes to _____________.

• stripes

• black

• blue

• transparent

What does "spill" mean in video production?

• unwanted light on a subject or background

• a fold or wrinkle in the green screen

• the amount of time overage of a clip

• unintended audio in a clip

Which is a techniques for creating crisp lines on a subject?

• add a light source behind the subject shining onto the back of the subject

• instruct the subject to wear green clothing

• instruct the subject to move around during filming

• create a shadow of the subject on the green screen by adding a light source in front of the subject

• use the same light source on the subject and background

What likely went wrong here?

• The camera was not switched to "subject mode."

• The subject was wearing green clothing.

• The subject was moving too quickly for the camera speed.

• The background image was not properly digitized.

What likely went wrong here?

• The subject had a green light on him.

• The background had a wrinkle or imperfection.

• The editor need to choose a different background image without blue or green.

• The subject was not back-lit with a separate light source.

What is a "hot spot?"

• a fold, wrinkle, or shadow on the green screen

• when the heat of the subject doesn't match the heat of the screen

• when the subject wears green and appears transparent

• too much light on the green screen