This filter applies time-varying Gaussian Blur to the source. Click here to see variation controls in detail. Dynamic Size Low Density value 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. See also Dynamic Gaussian Blur variations: Gaussian Blend - Blur an image and blend with the original. Variable size - control the blur power within the frame with a Radial Mask, or Linear Mask.