As a photographic property, sharpness has been given new meaning by digital imaging software. Programs such as Adobe Photoshop offer an extraordinary degree of control -- after the fact -- over the apparent sharpness of an image. Photoshop has always offered a choice of built-in sharpening tools, all found in the Filter > Sharpen submenu. Until Photoshop CS2, the best choice (confusing name aside) has been Unsharp Masking. Unsharp Masking is a powerful tool, but thanks to new algorithms and expanded controls, CS2's new Smart Sharpen filter produces even better results. Smart Sharpen is slower than Unsharp Masking, but it offers far greater control -- and for my images, quality trumps speed. Now I find myself using Unsharp Masking only when I'm pressed for time.