\documentclass{article}
\usepackage{incgraph}

\igrset{
  paper    = letter,
  zerofill = 4,
  bookmark = {Page \theigrpage\ (\nt)}
}

\begin{document}%
  \incgraph{example.jpg}
  \incmultigraph{exaimage-\nn.png}{1,...,150}
\end{document}