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Digital Imaging for Print Media Lecture 7: Understanding Channels

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Digital Imaging for Print Media Lecture 7: Understanding Channels

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Questions and Answers

What is the composition of every image that you see on screen according to the text?

Red, yellow, and blue

Red, purple, and green

Red, green, and blue (correct)

Red, green, and yellow

Where can you access the channels tab according to the text?

In the layers tab

In the file menu

In the view menu

In the window menu (correct)

What is the first option visible when the channel’s tab opens according to the text?

Cyan, magenta, and yellow channel

Red, blue, and green channel

Black & white channel

RGB channel (correct)

Why do the red, blue, and green channels appear black & white according to the text?

Because they are only a representation of those channels Signup and view all the answers

How can you change the visibility of layers from black & white according to the text?

By going to Edit menu and then selecting ‘preferences’ Signup and view all the answers

What is the purpose of checking the 'Show Channels in Color' option in Photoshop preferences?

To visualize the areas with the most and least applied color in each channel Signup and view all the answers

Which channel can be used as a mask to select the skies in an image?

Blue channel Signup and view all the answers

What is one of the most important concepts to become familiar with when working with pictures from a digital camera?

Understanding image histograms Signup and view all the answers

What does each pixel in an image have that has been produced by some combination of?

Primary colors red, green, and blue (RGB) Signup and view all the answers

What does an RGB histogram result from when the computer scans through each of these RGB brightness values?

Counting how many pixels are at each brightness level from 0 through 255 Signup and view all the answers