Under the Encode Settings tab the compression ratio can be edited. Under the Advanced tab the G-Weight and Weight values can be edited. Depending on the selected encoding ratio, there will be some degradation in the encoded imagery. Higher encoding ratios will produce greater data loss in the MrSID file. The setting for G-Weight increases or decreases the definition of edges in a MrSID image.
Lower settings create more defined edges with less emphasis on flat areas.
Higher settings create softer edges while smoothing the image in flatter areas with relatively consistent color. The setting for Weight affects the grayscale portion of a color image, which is the part of the image with no color information. Higher settings increase the emphasis on this grayscale aspect of the image. A lower setting increases the consistency of color between the MrSID image and the original. Before performing large-scale file compressions it is suggested that you try a variety of settings to see if they affect your images.