Top page > ScanGear Screens > [Advanced Mode] tab > Image Settings
You can enable/disable [Unsharp Mask].
[Unsharp Mask]
Set this function to [ON] if you want to emphasize the outline and sharpen the image. The default is [ON].
[Unsharp Mask] is available if you select [Color], [Color (Documents)], or [Grayscale] for [Color Mode].
If you switch ON/OFF [Unsharp Mask], the result is immediately reflected in the preview image.