Apple Shake 4 Tutorials - Manual (Page 255)

Tutorial 9 Creating Clean Plates 255
2 Add a Color–Invert node to the Move2D1 node.
3 Select the bridge001 node and add a Layer–Mix node.
4 Connect the Invert1 node to the second input of the Mix1 node.
The combination of Invert and Mix let you clearly see the differences between the
two images.
5 Load the Mix1 node into the Viewer (click the left side of Mix1) and load the Move2D1
node into the Parameters tab (click the right side of the Move2D1 node).
The Move2D onscreen controls appear.
6 Adjust the Move2D1 pan settings until the alignment of the plates is exact.