On Fri, Jan 13, 2012 at 4:44 PM, Gerben Wierda <gerben.wierda@rna.nl> wrote:

> Answering my own question, quite simple with ConTeXt:
>
> \definepapersize[a3landscape][A3,landscape]
> \definepapersize[a4portrait][A4,portrait]
> \setuppapersize[a4portrait]
> \starttext
> \externalfigure[foo.pdf]
> \page\setuppapersize[a3landscape]
> \externalfigure[bar.pdf]
> \stoptext
>
> G
>
> PS. The solution below does not work because it keeps the sizes of the
> images and does not set page sizes for the pages where the images are
> embedded.
>

Ah ok, you don't want to inherit the pagesize from the external pdf.

-- 
luigi