Unsharp Mask

Unsharp Mask is a Paint.NET plugin that enables users to apply an unsharp mask to all edges of an image. It comes packed with a few adjustment options to suit the preferences of all user levels.
In order to install this plugin, all you have to do is move the DLL files to the Paint.NET installed folders, namely the "Effects" directory.
From this point on, you can access the filter from the "Photo" submenu of the "Effects" menu within the main application window.
You can adjust the amount, radius and threshold of the unsharpen filter by moving a slider or directly inputting the numerical values. Plus, you can enable luminance only, along with fast rendering mode.
It is possible to view the "before" and "after" images in a panel before applying the new changes to the picture, as well as zoom in and out, or restore settings to their default values.
The small plugin does not burden Paint.NET plugin's performance, has a good response time and delivers quality photos. No error dialogs were shown in our tests, and the app did not hang or crash. When it comes down to it, Unsharp Mask is a handy tool for any user who wants to enhance their graphic editing experience.