The Blur tool reduces image sharpness by decreasing color contrast between neighboring pixels. To quickly access this tool and switch between the Blur, Sharpen, and Smudge tools press R.
The tool's parameters will be shown in a floating box over an image (by right-clicking the mouse) and also in the Settings Panel.
To change the value of a parameter, enter a numerical value in the parameter's field and press Enter (Mac: Return) or adjust the slider.
|Blurring of Magnifying Glass's Center|
|Hardness = 10%||Hardness = 80%|
|Radius = 1.5||Radius = 4.0|
To blur the image along a straight line, left-click to choose a starting point, then, while pressing Shift, move the cursor to where the end point will be and left-click, then release Shift. If Shift is not released, a new line will be drawn to each point where the mouse is clicked.