Why are Photo Lith and Photo Lith Posteriser very slow?
When these programs start they set the memory of the JVM to 256MB to allow for the handling of large files. If you have less than 256 MB of RAM windows will be paging causing slow progress. When Photo Lith and Posteriser load an image they create a Brightness Table, see below, for the image this can take some time to create for a large image and accounts for most of the delay when opening an image. To allow changes to be seen quickly both Posteriser and Photo Lith – Black & White use a smaller preview image to show you what your results will look like, when you come to save you images these programs then apply the same settings to the original image to create the final output before saving and this accounts for most of the delay when saving images.
