# Is it possible to customize the transdissolve effect?

This code uses the \transdissolve effect:

\documentclass{beamer}
\usepackage{tikz}
\begin{document}
\begin{frame}
\transdissolve[duration=.1]
\begin{tikzpicture}[remember picture,overlay]
\only<1>{\draw[fill=red] (current page.south west)rectangle(current page.north east);}
\only<2>{\draw[fill=blue] (current page.south west)rectangle(current page.north east);}
\end{tikzpicture}
\end{frame}
\end{document}


The effect decompose the frame into small rectangles that change color.

Is it possible to customize the effect changing the size of the rectangles?

Transitions are offered by PDF, not LaTeX. When available, you can however define the duration and the direction as options. For example, \transdissolve[duration=0.2] or \transglitter[direction=90]. The duration is given in seconds and the direction in degrees.