Hi Craig, > Also, with a low line screen my understanding is that a high-res input > doesn't do you any good, because it's not possible to represent the > additional information in the coarse output.
For the vast majority of images, yes, but there is an exception: a very sharp crisp image might have well-defined edges between dark and light that go through the middle of halftone cells. A good RIP will only produce as much of the halftone dot as falls in the dark area; the dot will be cut to follow the line of the edge in the image. Therefore, the higher the image's resolution, the better defined this edge will be. (Needs a diagram really...) Of course, many photographs are too diffuse for this to be an issue, but if you're stuck with a logo in bitmap format, the extra resolution is worth having. All the best, -- Alastair M. Robinson
