Variable Cross Blur filter allows you to control the effect power within the frame. You could have the effect appear only where your subject is rather than over the entire image, or keep the effect in outer areas to softly frame your subject. Parameters: Blur Type "Constant" mode produces more noticeable effect while "Soft" adds a subtle cross blur. Blend Controls how the two perpendicular blurs are combined. 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. 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). 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. See also Cross Blur variations: Cross Blend - Blur an image and blend with the original. Variable size - control the blur power within the frame with a Linear Mask.