Hi Rod, I am actually outputting in RGB, so that won't work, but many thanks for the suggestion.
What I have managed to establish is that it is related to the RIP's handling of an area where there have been pixels removed, in a gradient or feathering action. For example, if I make a greyscale step-wedge by having black over a white layer and having a gradient to make the wedge, the white end will print with cyan pixels. In this case, if I make a selection with no feathering and delete to the white layer underneath, there is no halo effect. With the feather, the halo is cyan pixels in one of the RIP's colour spaces. It appears to relate to the colourspace in the RIP, as it is yellow on another choice of colourspace. (We are not talking profiles here.) It's a printer-specific RIP (Colorspan), so explaining is difficult and probably boring to most on the list. Anyway, I think that now I have to look to CS tech support for solutions here. Many thanks for the interest from the list, and sorry for the reference to feathers and work today!! (to the list mum) Best regards, Ellie Rod Wynne-Powell said: > I cannot see exactly what your problem is, but what I can suggest is > that you create the feathered vignette once you are in your chosen CMYK > rather than in RGB and then soft-proofing, the profile may not like the > gradation it finds in the RGB, whereas if you do that after the > conversion you are carrying out your transform within the working > gamut. -- Ellie Kennard Innovative Imaging Studio http://www.iiStudio.com =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
