"What filter is that you use to up the contrast?" Basic filter with a threshold function (70% I think) The more layers of information you try to put into the image, the more complex editing it becomes. If you want greyscale outputs then you're limited to the three colour channels and it would be dificult to combine these with completely independent on/off monochrome maps. (It could be done by limiting the greyscale components to use 7bit (or even 6bit) grey values with the top bit reserved for an on/off channel, and then adding filters to split the two maps apart - the top bit map is a simple threshold, the other I'd need to think about!) Since many of these control maps are fairly rough/low detail and so can be low resolution, I'm not sure there's much benefit in trying to cram too many of them together in a single image. -- Mark

Mark