ocr: Unsharp masking Threshold: This determines what level of contrast to sharpen.At a setting of 0 the Digital sharpening works by creating a trompe d'oeil (that is, a fooling of the eye) by program looks at everything; it looks at less as this number is increased. This number selectively adding contrast to edges and thereby making the picture appear sharper. becomes critical with flesh tones unless you'd like to see every pore, keep it over 6. This sleight ofl hand can be controlled by programs such as Photoshop that provide the following settings when using unsharp masking: A recommended base se ...