Apple Shake 4 - Manual (Page 183)

Chapter 5 Compatible File Formats and Image Resolutions 183
Using the Resize, Fit, or Zoom Node to Scale the Frame
The following three nodes change the resolution by scaling the pixels.
• Resize: You set the output resolution of the node, and the image is squeezed into
that resolution. This usually causes a change in aspect ratio.
• Fit: Like Resize, except it pads the horizontal or vertical axis with black to maintain
the same aspect ratio.
• Zoom: Same as Resize, except that you are supplied with scaling factors, so a zoom of
1, 1 is the same resolution; 2, 2, is twice the size; .5, .5 is half the size, and so on.
For more information on the individual transform nodes that can be used to change
resolution, and tables listing the differences between the scaling functions, see
Chapter 26, “
Transformations, Motion Blur, and AutoAlign ,” on page 763.
Nodes That Affect Image Resolution
All of the nodes in this section can be used to modify image resolution.
Fit
The Fit node changes the image resolution, resizing the image to fit inside of a frame.
Fit does not stretch the image in either axis; it zooms X and Y by the same amount until
either value fits in the new resolution (that you specify). For example, if you have a 100
x 200 image, and fit it into a 250 x 250 resolution, it zooms the image by 25 percent
(250/200 = 1.25), and pads black pixels on the left and right edges.
Note: The Fit node allows you to use different scaling filters to scale the image
horizontally and vertically.