Hello, everyone ~ I'm Teacher Er Yu, who loves discretion education. Today we will learn how to use the curve editor to modify the contrast and tone of an image.

1 First of all, we open the picture material file:

2. Then look at the menu bar above, find the image menu, click Adjust, curve command, or press the shortcut key Ctrl+M, so that we can bring up the curve editor. In the curve editor, we can adjust four channels, namely RGB, red, green and blue channels. Our channel option here is RGB, because our image color mode is RGB. If your image color mode is Lab mode, photoshop's channel selection will change accordingly. In the curve editor, we can see that the image lacks the tone of the dark part, so I move the slider on the left to the right, so that the dark part of the image can be deepened, as shown in the figure:

3. Then when I move the slider to the left, I can highlight the bright part of the image, as shown in the figure:

4. After making such a comparison, I can select the green channel in the channel drop-down list, that is, switch the RGB channel to the green channel, and its shortcut key is Alt+4. After switching to the green channel, I hope the original green place in the picture is greener. I can click a point on the curve and drag it up, as shown below:

5. Now that the whole picture is a little green, I can click another point here and drag it down, so that the pixels with less green contain less green and the pixels with more green contain more green, and then click OK, as shown in the figure:

6. Now, I click Image, History, and then click the Create New Snapshot button at the bottom of the History panel to create a snapshot. We can see the image effect before and after modification, as shown in the figure:

7. Then, modify the contrast and tone of the image with curves to obtain the final effect:

look