Apple Shake 4 - Manual (Page 803)

Chapter 26 Transformations, Motion Blur, and AutoAlign 803
motionBlur
Motion Blur quality level. 0 is no blur, whereas 1 represents standard filtering. For more
speed, use less than 1. This value is multiplied by the global motionBlur parameter.
• shutterTiming: A subparameter of motionBlur used to specify shutter length. 0 is no
blur, whereas 1 represents a whole frame of blur. Note that standard camera blur is
180 degrees, or a value of .5. This value is multiplied by the global shutterTiming
parameter.
• shutterOffset: A subparameter of motionBlur representing the offset from the current
frame at which the blur is calculated. Default is 0; previous frames are less than 0.
Scale
The Scale node scales the image with subpixel precision. To rotate and scale an image,
you probably want to use the two independent nodes, Rotate and Scale, rather than a
Move2D node, because you can control the centers independently. Unlike the Resize
node, Scale does not change the image resolution.
If you scale by a negative number on the Y axis, you buffer the image. You can also use
the Flip and Flop nodes to invert your image.
Parameters
This node displays the following controls in the Parameters tab:
xScale, yScale
These parameters let you change the horizontal and vertical scale of the image. By
default, the yScale parameter is locked to the xScale parameter. The sliders let you
adjust the scale of the image from 0 to 4 times the current size, but you can enter any
value into the numeric field.
Note: Entering a negative value into the xScale or yScale numeric field reverses the
image along that axis.
aspectRatio
This parameter inherits the current value of the defaultAspect global parameter. If
you’re working on a nonsquare pixel or anamorphic image, it is important that this
value is set correctly to avoid unwanted distortion in the image.
xCenter, yCenter
These parameters let you move the horizontal and vertical position of the center point
around which all transformations occur. For example, moving the center point to the
right changes the point about which the image rotates when you adjust the angle
parameter.
motionBlur
Motion Blur quality level. 0 is no blur, whereas 1 represents standard filtering. For more
speed, use less than 1. This value is multiplied by the global motionBlur parameter.