7. The Menus / 7.7 The Menu Filter

7.7.9 Sharpen/Adaptive Sharpen

Adaptive Sharpen is not sharpening an image homogeneously but is only increasing contrasts higher than a given limit. In contrast to Unsharp Masking it uses all color channels for calculating the contrast and is not filtering channel by channel. Usually Adaptive Sharpen gives best results with a threshold around 10%.