Ignore figure for list of figures

As described in figures in sidewaysfigure environment are not listed in List of Figures you can add an empty optional argument to \caption and load either of the packages subfig, caption or subcaption to make the figure not appear in the list of figures.

\documentclass{article}

\usepackage{caption}

\begin{document}

\begin{figure}
  \caption[]{My caption 1}% Does not appear in LoF
\end{figure}

\begin{figure}
  \caption{My caption 2}% Appears in LoF
\end{figure}

\listoffigures

\end{document}