Adobe Photoshop CS5 - Sharpen as it should be

Following in the footsteps of the updates in CS4 to the old Dodge, Burn, and Sponge tools, CS5 features a new logic for the Sharpen tool. Now pressure-sensitive, brush-based sharpening is more powerful and less destructive (no artifacts). Just select Protect Details and the Tablet Pressure options in the Options Bar. In fact, this is the most sophisticated sharpening algorithm in Photoshop!