Photoshop: Understanding Channel Principles through pictures

The image of the computer through the color RGB performance, different colors stored in different channels, so RGB mode has 3 channels, CMYK mode has 4 channels and so on

Open a photo to view the channel

As you can see, the whiter the display, the darker the corresponding primary color.

Default Photoshop in grayscale, want to see the channel element Primary colors, you can choose the menu: Edit > Preferences > interface, check the "color display channel".

Photoshop: Understanding Channel Principles through pictures