This 35 page PDF tutorial details several basic sharpening techniques that form a foundation for sharpening photographic images.
Sharpening digital images is more of an art than a science. Almost any simple sharpening can help an image especially in print but true creative sharpening can put a final polish on a 2-D image that makes it seem more dimensional. Sharp images jump off the page. The techniques outlined here should take care of 90% of the digital photographers sharpening needs.
The Tutorial examines
|Unsharp Mask - understanding radius, threshold and amount|
|Layer Sharpening - Overlay mode with High Pass filter|
|Layer Apply Modes - using Luminosity, Lighten and Darken modes|
|Advanced Blending Options - using advanced blending to control sharpening|
|Split Sharpening - making Lighten and Darken sharpening layers|
|Octave Sharpening - a special technique for intense sharpening|
This is an intermediate level tutorial the 35 page PDF steps through the construction 4 images but a basic understanding of layers and layer masks is helpful. The sample files for the tutorial are available as a separate download through a link in the PDF - you will need Aladdin's "Stuffit Expander" to decompress the sample files!
3.5 meg PDF - Download from Here