Photoshop doesn't sharpen focus, it sharpens detail using any of three remarkable filters: Unsharp Mask, Smart Sharpen, and High Pass. Apply them as smart filters, and you're ready for any output scenario.
In this video tutorial by psdvault, we will show you how to Non-destructively Sharpen Your Image, as a result bring out more photo details in Photoshop.
You can apply this method to any image and you will be amazed by the result. Plus it is done in a non-destructive way, without damaging the original image.
Are you new to Photoshop? Have you been trying to teach yourself the basics of Photoshop but have found the amount of educational material available on the net a bit overwhelming?
This tutorial is demonstrating everything you will need to know to start working with sharper images in Photoshop.