Oh ... it seems you can do it simply this way :

\begin{frame}[plain,t]{}
\includegraphics[width=\textwidth, height=\textheight]{mypicture}
\end{frame}

Fabrice


2012/11/17 Myles English <mylesenglish@gmail.com>

>
> Hi Fabrice and Nicolas,
>
> Fabrice Popineau writes:
>
> > That would be definitely nice. I think it is quite common that you want
> to
> > get rid of everything to have more space for a big drawing
> > (moreover it breaks the monotony of the layout)
>
> I don't fully understand this thread but to get a full frame photo on a
> slide I once did this, essentially turn the wallpaper on, make a blank
> slide, turn it off again (looks like it used the old, current,
> exporter):
>
> ** Turn on wallpaper
> :B_ignoreheading:
> :PROPERTIES:
> :BEAMER_env: ignoreheading
> :END:
> #+begin_latex
>   \setbeamertemplate{background canvas}%
>                     {\ThisULCornerWallPaper{1.115}%
>                       {/home/myles/MASSIVE_PHOTO.jpg}}
> #+end_latex
>
> **
>  :B_columns:
> :PROPERTIES:
> :BEAMER_env: columns
> :END:
>
> \vskip15pt
>
> ** Turn off wallpaper
> :B_ignoreheading:
> :PROPERTIES:
> :BEAMER_env: ignoreheading
> :END:
>
> #+begin_latex
> \setbeamertemplate{background canvas}{\ClearWallPaper}
> \setbeamercolor{normal text}{bg=gray!30}
> #+end_latex
>
>
> Myles
>