\documentclass[hyperref=pdftex, presentation]{beamer}
% Replacing 'presentation' with 'handout' in the above line
% will produce 4 slides per page.
% The hyperref option makes it possible to include hyperlinks.

\mode<presentation> {
\usetheme{Boadilla}
\setbeamercovered{transparent}
}

\usepackage[english]{babel}
\usepackage[latin1]{inputenc}
\usepackage{times}
\usepackage[T1]{fontenc}

\mode<handout>{
\usepackage{pgfpages}
\pgfpagesuselayout{4 on 1}[letterpaper,landscape,border shrink=5mm]
\setbeamercolor{background canvas}{bg=black!10} }

\setbeamertemplate{footline}
{
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%\title[GEANT4/EGS5]{GEANT4/EGS5}

\title{Gain cal}

\author{Sho Uemura}
%\institute[SLAC]{SLAC\\}
\date[August 30, 2012]

\begin{document}

\begin{frame}
	\titlepage
\end{frame}

\begin{frame}{Hit energy distributions}
	\begin{center}
		\includegraphics[width=\textwidth]{formula}
	\end{center}
\end{frame}

\begin{frame}{MC and data}
	\begin{center}
		\includegraphics[width=0.4\textwidth]{ecalgainplots_counts_sim}
		\includegraphics[width=0.4\textwidth]{ecalgainplots_counts_data}
	\end{center}
\end{frame}

\begin{frame}{E/p distributions}
	\begin{center}
		\includegraphics[width=0.4\textwidth]{nohv4_gains}
		\includegraphics[width=0.4\textwidth]{gain4_gains}

		\includegraphics[width=0.5\textwidth]{uncal_espread}
		\includegraphics[width=0.5\textwidth]{gain4_espread}
	\end{center}
\end{frame}

\end{document}