How to calculate the number of pixels needed
To calculate the number of pixels needed for a given image
window size, we again twist the formula, yielding another multiplication
process:
Q x Ipi x inches = pixels
When the frequency, Q factor and final image size are known,
multiply the three elements to get the number of pixels needed.
For example, with a halftone frequency of 150, a final size of
13.25 inches in the long dimension, and a Q factor of 1.5, the
formula to calculate the number of pixels needed is:
1.5 x 150 x 13.25 = 2981.25
(We'll round-up to 2982.) All that is needed now is to pick
the Image Pac component with 2982 or more pixels in the correct
dimension, and you have the correct file. The Base* 16 Image
Pac has 2048 x 3072 pixels; if the dimension of this image uses
the long dimension of the Image Pac. then it is possible to use
the Base* 16 file, otherwise it will be necessary to use the
Base*64 file (and perhaps decimate the image to the correct size).
