begin{figure}
  centering
  includegraphics{some_file}
  caption{Frobnication of the bar (baz areas indicate quux)}
  label{fig:frobnication-of-bar}
end{figure}

documentclass{article}

usepackage{mwe}

begin{document}
listoffigures

begin{figure}
  centering
  includegraphics{example-image}
  caption[Frobnication of the bar]{Frobnication of the bar (baz areas indicate quux)}
  label{fig:frobnication-of-bar}
end{figure}
end{document}