This Dynamic Gaussian filter allows you to control the blur power within the frame. You could have the Dynamic Blur effect appear only where your subject is rather than over the entire image for example, or keep the Dynamic Blur effect in outer areas to softly frame your subject. Click here to see variation controls in detail. In outer areas Dynamic mask position Parameters: Size Controls the blur power. Value of 1.0 sets the maximum blur, but you can enter in edit field values up to 4.0 and get more blur, but with a slightly reduced quality. Variation Controls Blur power variations. Variation slider allows you to set Blur power variations to 0.0 and vary only mask position. 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. Variation Mask position variatons allows you to have the mask walking around some point or over the whole image. See also: Gaussian Blur - Blur an image. Gaussian Blend - Blur an image and blend with the original.