spworley@athena.mit.edu (Spaceman Spiff) (03/15/91)
The problem I was having with Post's halftones *DOES* have a solution. The problem lies in the DPI resolution of the image- the default 75 can only handle ONE grey shade (the perfect 50%). I would think 75dpi could handle many more, but I guess not. Anyway, cranking the resolution up to 1000 dpi produced beautiful output. Post (1.5) is an excellent tool- I already mentioned how complete it was and how nice the interface [CLI or Workbench] was. It's quite usable- try it out. The current version of post (V1.5) can be found on one of the new (460-470?) batch of Fish disks (if you can find them!) or on ab20.larc.nasa.gov. I also got a lot of "that happened to me too!" mail, and I sent out the solution to them. Hats off to Adrian Aylward, the author. Thanks also to Thomas Rokiki (Mr. TeX!) for pointing me at the solution, and who wanted my code to recreate and perhaps fix the possible problem in Post. Rich Carriero also pointed out the DPI problem. One useful technique- to make nice greyscale IFFs, you can output the page with DPI set pretty high (like 1000) then shrink the page using The Art Department's scaling commands to produce nice greyscale output. This should work with color, too, though I haven't tried it. -Steve ------------------------------------------------------------------------------ Steve Worley spworley@athena.mit.edu ------------------------------------------------------------------------------