\mode<presentation>

\setbeamerfont{title}{size=\Large,series=\bfseries}
\setbeamerfont{subtitle}{series=\bfseries}
\setbeamerfont{frametitle}{size=\large, series=\bfseries}
\setbeamerfont{framesubtitle}{size=\small, series=\bfseries}
\setbeamerfont{pagenum}{size=\footnotesize}
\setbeamerfont{block body}{size=\normalsize}
\setbeamerfont{footnote}{size=\scriptsize}

\mode<all>