User Guide

These controls are very powerful and geared for the advanced user. With this feature you
can fine tune what gets sharpened on your photograph. Here's how: you will have 3 Input
Levels sliders, 2 Output Levels sliders and the eyedropper tools to work with. Use the
sliders/eyedroppers to select the areas you want sharpened. The black areas will receive
the most sharpening effect. The gray areas will receive moderate sharpening and the
white areas will receive only a light global luminance sharpening effect.
The second stop will be a "USM" window.