Apple Shake 4 - Manual (Page 180)

180 Chapter 5 Compatible File Formats and Image Resolutions
Table of File Sizes
In the following table, all sizes are for 3-channel images. Note that many images
support optional alpha or Z channels, which add to the file size. A single channel image
is typically one-third the size. The two sizes listed in each cell are for a Ramp (an
example of extreme compression), and a completely random image, each in MB.
Normal plates tend to be in between, usually closer to the higher value. This can give
you a very wide variation in an image. For example, an .iff goes from 2.5 MB for a 2K 8-
bit ramp to 9.1 MB for the same size/depth with a random image. If only one entry is
listed, it is an uncompressed file.
Controlling Image Resolution
Shake has no formal working resolution to set. Setting the defaultWidth and
defaultHeight in the format subtree of the Globals tab only affects the size of newly
created Shake-generated images, including those created by the Checker, Color,
ColorWheel, Grad, QuickPaint, QuickShape, Ramp, Rand, RGrad, RotoShape, and Text nodes
in the Image tab. The actual resolution of your composition is primarily determined by
those of the input images, and can be modified by a variety of operations as you work
down your node tree. For example, if you read in a D1 resolution image, your project
starts out at D1 resolution.
Note: While it may seem that choosing a new setting from the format pop-up menu in
the Globals tab may be changing the size of the image in the Viewer, this is not true.
What you’re really seeing is the change being made to the defaultViewerAspectRatio
parameter, which changes how the image is scaled in the Viewer in order to
compensate for images using nonsquare pixels (like standard definition NTSC and PAL
video). This parameter has no actual effect on the resolution of your final image.
Extension NTSC, 8 Bits NTSC, 16 Bits NTSC, Float 2K, 8 Bits 2K, 16 Bits 2K, Float
.cin (10 bits) 1.3 12.2
.iff .74 | 1 1.7 | 2 2.9 | 3.9 2.5 | 9.1 11.5 | 18.2 22.5 | 35.8
.jpg (100 %) .02 | .48 1.4 | 4.3
.mray 1.3 2.7 5.3 12.2 24.3 48.6
.pic .9 | 1 1.5 | 9.1
.rla .8 | .92 1.8 | 2 4 2.3 | 9.2 11.5 | 18.4 36.5
.sgi .74 | 1 1.8 | 2 2.3 | 9.3 16.5 | 18.5
.tif .04 | 1.4 .07 | 1.6 3 | 3.7 .25 | 12.5 .2 | 17.8 27.4 | 33.3
.xpm .68 | 1.2 6.1 | 10.6
.yuv .68 4 (HD)