How does ps make a double image effect?

This is called double exposure effect.

Double exposure is to make multiple exposures on the same negative, which is a skill that senior photographers can master. If you also want to take photos with double exposure effect, you can give them to the omnipotent PS. Here's how to double exposure in PhotoShop.

First, you need to import your character photos into PS, and then drag the landscape photos directly into your character.

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Then change the blending option of the landscape photo layer to strong light. Then reduce the opacity a little, and adjust it to your favorite effect.

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Next is the Sao operation, which creates a mask on the landscape layer, and then uses the keyboard shortcut CTLR+I to reverse the operation. At this time, the picture returns to the original character picture.

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Finally, we use the edging brush tool, that is, the hardness of the brush is 0%. Regardless of size.

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It is very effective to smear the characters on the canvas until the landscape pictures are displayed.

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