tips & tricks > Sharpening Images
Now keep in mind that this is just one approach to sharpening images. As with all filters in Photoshop, there are infinite possibilites for the result. Here’s a little taste of what is possible with this Photoshop function.
Begin with an image (before image supplied at end). Go to Filter >> Sharpen >> Sharpen More and apply it. Then apply Filter >> Sharpen Edges. Then Filter >> Unsharpen Mask. I used these settings:
Now check out the before and after: