What is a mask in ps

What is the mask in ps?

The mask is the outside of the marquee (the inside of the marquee is the selection). The word mask itself comes from daily life application, which means "the board covered on it".

Masks in ps are usually divided into three types, namely layer masks, clipping masks, and vector masks.

Mask function

If you want to apply color changes, filters, and other effects to a specific area of ​​the image, and there is no selected area (i.e. Black areas) are protected and isolated from editing. To put it bluntly, masks and circle selection areas are similar in use and effect, but masks can use most of Photoshop's functions and even filters to describe the specific areas you want to operate in more detail.

You can understand the mask from several aspects. For example, from the perspective of channels, white represents the selected area, and the area containing grayscale is partially selected, or it is the opacity medium of the area. between 0 and 100.

Take the layer mask as an example. Without modifying the original image, that is, without adding a mask, you can imagine that the mask is all white. If the entire image is covered by the mask, it will be masked in the color channel. It is black. If you want to cover a certain part, use a brush (foreground black) to paint, then there will be a layer of mask on the painted part. If you want to remove a certain part of the mask, you only need to use a brush with the foreground color to be white. smear.

The principle of black and white is only suitable for the masks of photoshop and AE, while the masks of Flash are black and white swap.

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