Have you ever photographed a product up close and noticed that you can’t get the entire object in focus? Try putting your camera on a tripod and taking several shots, changing the focus each time. Then it’s easy to blend those images together in Photoshop into a single sharp image. This is called focus stacking. You can do focus stacking with Auto-Blend Layers. Put all the images on separate layers in the same document, select all those layers in the Layers panel, and then choose Edit>Auto-Blend Layers—but, there’s a catch. Each time you changed focus while taking the photos, the size of the image changed slightly. This can be fixed by first selecting all the layers and choosing Edit>Auto-Align Layers.
This tip previously published in Colin Smith’s Photoshop Tips column, in the January, 2020 issue of Photoshop User magazine.