This post was written by Mister Thorne: "I notice that quite a few law firms publish PDFs in which the type isn't rendered properly. Instead, it looks bold and rough unless you zoom in on it, in which case it looks just fine.
Consider the following block of type. The left side is from a PDF published by a Great Big Law Firm; the right side is from the Word document that was the source of the PDF.
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The type in the Word document looks fine; the type in the PDF is much heavier and less distinct. To use some highly technical typesetter's terminology, "it just don't look right."
In this case, the problem is that the PDF was saved in the wrong format. But that's not especially important, as there are a number of problems that can prevent PDFs from looking as good as they should..."
Continue reading this interesting post by clicking on the author's name.
Source: Set in Style, 26 January 2010. Reproduced with permission of the author.