Believe that in the process of learning Photoshop, not a few people do not scratch the mix mode. Even Adobe itself believes that there is no good way for users to understand what is going on with the blending mode. I consulted the help file and saw the following colorful images. Oh, mixed mode is complex enough, but also to add so many colors to make trouble, probably Adobe also forgot that color image is made up of grayscale images.
However, the text is still helpful, especially the beginning of these sentences. You have to understand what is the base color, the blend color, and the result color, otherwise you don't need to look at it anymore.
Tutorial Start:
1, the establishment of a 400x400 gray-mode document.
2. Use the Gradient tool in the toolbox to open the Gradient editor and choose black and white gradient, which requires a little editing. Drag the Smoothing slider from 100% to 0%. Interested friends can compare the gradient graph histogram of smoothness 100% and 0% on other occasions, and consider why.