What is the overlay way in Photoshop?

Photoshop Overlay This pattern mixes the colors placed or applied to a layer with a background color in a way that is not artistically logical, but it can get interesting results. Pure black or pure white areas in the background image cannot display overlay shading or image areas on the layer in overlay mode. The brightness values between black and white in the background area are mixed with the color of the 0ver1ay material to produce the final synthetic color. To make the background image look like it was taken with design or text, overlay can be used to draw a design or text on the background image.

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