\framezoom - What am I doing wrong?

Question

I'm working on my second ever Latex Beamer presentation, and loving the clean, professional appearance.

All compiles into PDF format no problem, until I try to use \framezoom(the image is .jpg). This fails:

\begin{frame}
\frametitle{Example}
\framezoom<1><2>[border] (0cm, 0cm) (2cm, 1.5cm)
\includegraphics[height=4cm]{02_pa}
\end{frame}

but works ok without the framezoom line. I'm using Texworks, and the last lines of the console are:

("C:\Program Files\MiKTeX 2.9\tex\latex\amsfonts\umsb.fd")
("C:\Program Files\MiKTeX 2.9\tex\latex\tipa\utipx.fd") [3] [4] [5]
<02_pa.jpg, id=50, 2377.88374pt x 2055.68pt> <use 02_pa.jpg>
Overfull \vbox (4.0187pt too high) detected at line 77
[6 <C:/Documents and Settings/Owner/My Documents/Beamer/02_pa.jpg>] [7]
[8] [9] [10] [11]
Runaway argument?
border] (0cm, 0cm) (2cm, 1.5cm) \includegraphics [height=4cm]{02_pa} \ETC.
! Paragraph ended before \beamer@framezoom was complete.
<to be read again> 
                   \par 
l.117 

I've found several examples of how to use the command, and I can't see what I'm doing wrong. Any suggestions?

Answer 1

I've checked the beamer code, and the problem will be the space you have in the line

\framezoom<1><2>[border] (0cm, 0cm) (2cm, 1.5cm)

after [border]. The definition of the internal \beamer@framezoom macro is such that no space is allowed here, or indeed between the two sets of parentheses. Try

\framezoom<1><2>[border](0cm, 0cm)(2cm, 1.5cm)

Answer 2

instead of \includegraphics use the command \pgfimage. Then it should work.

\documentclass{beamer}
\begin{document}

\begin{frame}{Example}
\framezoom<1><2>[border](0cm, 0cm)(2cm, 1.5cm)

\pgfimage[height=8cm]{tiger}
\end{frame}
\end{document}

this worked for me.