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1. How can you stop a blur filter from including pixels outside of the Canvas?
Select the Crop checkbox in the Filters tab of the Inspector.
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2. When adding clips to a Motion project, which characteristic of a video clip is best kept consistent between clips: resolution, codec, or frame rate?
Using clips with the same frame rate (that also match the project frame rate) will ensure that no frames are skipped or repeated.
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3. Where is the best place to sample a representative greenscreen pixel when using the Primatte RT filter?
Sample somewhere close to the subject being keyed, particularly near areas of detail like hair.
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4. You are looking at a keyed shot with Output Type set to Matte. The subject is mostly white, but a few areas of gray are present inside the matte. Which parameter of the Primatte RT filter do you adjust?
The Matte Density parameter.
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5. You've perfected the matte on your subject, but noise remains near the edges of the matte where the greenscreen lighting was darker. If you adjust the Noise Removal amount, it adversely affects your subject's matte. What approach can you use to remove the noise?
Create a garbage matte to mask off the noise, and animate it as necessary.
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6. Your key looks great, but a green halo appears around your subject. How can you neutralize it using the Primatte RT filter?
Increase the Spill Suppression setting to add enough magenta to cancel out the green.
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7. How can you check the actual RGB values of an area that should be white in the background plate and compare it with the foreground plate?
Turn on the Color indicators in the Toolbar, and move the pointer over pixels in the image.
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8. Identify one filter that you can use to adjust luminance and color balance separately.
The Level filter lets you adjust the overall RGB brightness values, and also select and adjust the individual red, green, and blue channels.
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