This Dynamic Linear Blur filter allows you to control the effect power within the frame. You could have the effect appear only in a randomly floating area, or keep the effect in outer areas only. Click here to see variation controls in detail. Pull floating area Shake edges Parameters: Blur Type "Constant" mode represents the real motion blur effect while "Soft" adds subtle directional blur. One-Way variations add not only motion blur, but a visual motion also. Size Controls the blur power. Value of 1.0 sets the maximum blur, but you can enter in edit field values from -4.0 to 4.0 and get more blur, but with a slightly reduced quality. Negative values set opposite-direction blur for One-Way modes. Variation Controls blur power variations. Variation slider allows you to set blur power variations to 0.0 and vary only other parameters.. Direction Controls the blur direction. Value of 1.0 = one full rotation (360 degrees). You can enter values up to 100.0 and create direction animations (rotating direction). Variation Controls blur direction variations. Variation slider allows you to set blur direction variations to 0.0 and vary only other parameters.. Round This option selects the mask shape. If On - the mask is round, otherwise - the mask uses frame aspect. Distribution How the blur size vary over the frame. Values over 0.5 add more blur at frame adge, values under 0.5 - at the frame center. Center X, Y Controls the position of the mask center point. By keyframing the Center control, you can have the effect area track your subject's movement. Variation Mask position variatons allows you to have the mask walking around some point or over the whole image. See also Dynamic Linear Blur variations: Linear Blend - Blur an image and blend with the original. Variable size - control the blur power within the frame with a Linear Mask.