Hi! I've been using Pshop for years, but haven't gotten much into using the filters. Now I have a need to convert some full-color, fully tonal work into b&w line art for inexpensive print publication. I've worked before with simply making my images greyscale, but I didn't like what the printer did with them, and this time I want to be a little more creative. I've tried the sketch/graphic pen filter, but I'm not entirely pleased with the results. What would be ideal, I think, would be a filter that approximates the effect when you take a tonal image and save it as a gif with only 2 colors selected. I've tried to make one of these into a line art image with some success (see attachment) but I think a filter would provide a lot more control and quality. Any leads on a good plug-in or something?