"Effect: Center Focus" dialog box

Used to apply an effect where the immediate surroundings of the specified position appear to be focused.

[Center] field

The center of the effect is displayed. The position of the center is specified by dragging the mark, provided in the dialog preview display.

[Radius] field

The radius of the effect is displayed as a number of pixels. The radius is specified by dragging the mark, provided in the dialog preview display.

[Strength] slider

Used to specify the degree of the center focus effect with an integer between 0 and 10.