Transparency
InDesign’s ability to create transparent effects has great appeal for designers. It’s easy to make objects translucent, feather the edges of vector components, and add drop shadows to anything. But the introduction of transparency in InDesign 2.0 caused printers to grumble. The short story is that transparency effects, such as blend modes and opacity settings, utilize an imaging model that goes beyond what PostScript understands. And since PostScript has long been the native tongue of imagesetters, platesetters, and many of our desktop printers, this presents a challenge. (While the increasing use of the Adobe PDF Print Engine in output devices solves transparency issues, not all devices are using the PDF Print Engine yet.) InDesign ...
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