One, PS layer opacity settings
The opacity of a layer determines the degree to which it displays its own layers: if the opacity is 1%, the layer is almost transparent, and the layer with a transparency of 100% appears completely opaque (note that this is not to be reversed). The opacity of a layer is set by setting the value of transparency in the opacity option in the Layers panel, 100% for full display (Figure 1).
Tip: The opacity of a background layer or locked layer cannot be changed.
In addition to setting the opacity of the layer, you can specify the fill opacity for the layer. The fill opacity affects the pixels drawn in the layer or the shapes drawn on the layer, but does not affect the opacity that has been applied to the layer effect. The Fill method is to enter a value in the Fill Opacity text box of the Layer palette (Figure 2).
Using PS layer blending mode to create a variety of special effects, using blending mode is simple, just select the layer you want to add blending mode to, and then find the desired effect in the blending mode menu of the Layers panel. Now let's take a closer look.
Second, layer blending mode
You can create a variety of special effects using mixed mode, noting that the layer has no "clear" blending mode, and that LAB images cannot use modes such as color dodge, color burn, darken, lighten, difference, and exclude. Using blending mode is simple, just select the layer you want to add blending mode to, and then find the desired effect in the blending mode menu of the Layers panel (Figure 3).
Figure 3 The blending mode specified in the menu options bar controls the hue and light of the pixels in the image, before applying these modes we should consider the following color application angle: The base color, which is the original in the image. A blend color that is applied through a painting or editing tool. The resulting color is the color of the blend.
Various types of mixed mode options:
Normally, edit or draw each pixel to make it the result color (default mode).
Figure 4 Category: