The sharpness adjustment of the software eliminates the outline phenomenon or noise occurrence mentioned above. The preset value provides you the parameters balanced well, but you can also set them manually to make more precise adjustments.
There are two type of sharpness algorism, "normal sharp" and "pure detail".

Normal sharp

"Normal sharp" is ordinary algorism.

Pure detail

"Pure detail" is ISL original algorism for higher resolutional looking. It gives you stronger effect than with "normal sharp".