Determines whether the output MrSID file contains optimization data. By default the Optimizable check box is selected.
The option for optimizing images is specific to MG3 and MG4 files. When you optimize an image, you make it possible to perform some image manipulation operations on the image without re-encoding or recompressing the image. Image manipulation operations that benefit from optimization include the following:
Creating an optimized image does not affect encoding time. However, saving optimization data for an image modestly increases the size of an image by approximately one to five percent. If image size is critical and you do not plan to perform further image manipulation operations, deselect the Optimizable option.