On Tuesday 19 July 2005 09:43, Benjamin Green wrote: > On Tue, 19 Jul 2005 08:28:31 +0100, PLinnell <mrdocs at scribus.info> wrote: > > Hi, > > > > On Tuesday 19 July 2005 06:53, Kite Lau wrote: > >> Isn't PDF/X-3 a subset of PDF/X-1a? > > > > No. Each PDF/X-x standard is separately defined. Moreover, it is > > more correct to define them as PDF/X-1a:2003 for example. > > > >> See: http://www.pdf-x.com/pdfx_123_1.php > > Is the quoted page completely wrong then? This is from the bottom > right hand corner: > > "As a superset of PDF/X-1a it has the same requirements, however > PDF/X-3 also allows for the use of device independent color spaces > such as Lab and those based on ICC profiles, as well as CMYK."
It is a question of semantics. What I meant to say more clearly is each spec is a standalone spec which has to be applied. I can see where someone might be confused. Subtracting the PDF/X-3 features does not necessarily provide a PDF/X-1a file, which some readers might infer from reading. Clear as mud ? ;) Moreover, there is *another* set of PDF specs in the works call Ghent PDF, based on a working group called the Ghent PDF group. The point is just because a file is PDF/X-3 can it also be considered PDF/X-1? Most definitely not, IMO. Peter
