How To Quickly Focus Stack an Image in Photoshop
When you take into account all the different ways to get a tack sharp image, it can be quite overwhelming. I’ve been photographing landscapes as a full time photographer for six years now, and have tested just about every method out there. Focus stackingis just one more option, but it is one of my favorites, if the conditions are right.
Focus stacking is a life saver when you have a foreground subject that is very close to the frame, and a background subject that is equally important to the image.....
https://digital-photography-school.com/quickly-focus-stack-image-photoshop/