The Photoshop® CS Book for Digital Photographers

Luminosity Sharpening

This is another sharpening technique popular with professionals, and one that sparks debate between photographers who prefer it to the Lab sharpening technique. Both sharpen just the luminosity (rather than the color data), so theoretically, they do the same thing, but you’ll hear pros argue that one method produces better results than the other. That’s why I’m including both in the book, so you can decide which you like best. (And then argue about it with other photographers. This is what we do for fun.)

Step One.	Open a photo that needs some moderate sharpening. © BRAND X PICTURES
Step Two.	Go under the Filter menu, ...