Sharpening an image

You can use the Sharpen tool to sharpen an image by enhancing the contrast of medium and high contrast edges. You can save your options as a preset for future use.

To sharpen an image using Sharpen tool:

  1. In Edit mode, in the Detail group, select Sharpen.
  2. Drag the sliders to enhance or fix your image as described below.
  3. Do one of the following:
    • Click Done to apply your changes and close the tool.
    • Click Cancel to discard all changes and close the tool.

ACDSee Photo Manager Note Sharpening an image

Click Reset to clear your changes and reset to default settings. If you saved your changes, you cannot reset your settings.

Sharpen options


Specifies the amount of light added to or removed from each edge. Higher values produce darker edges.


Specifies the number of pixels to adjust around each edge. Higher values increase the number of sharpened pixels.


Specifies how different the lightness values of two adjacent pixels must be before they are sharpened. Higher values increase the required difference. It is recommended that you set the threshold so that it enhances edges while keeping background noise to a minimum.

Threshold Feathering

Select this option to create smoother transitions between sharpened and unsharpened pixels. If this option is not selected, you may see lines between pixels that have been sharpened and pixels that have not been sharpened.

See also:

Sharpening an image