Graphics, Figures & Tables ⇒ Resolution of Pictures

[Cham]

I'm using some high resolution PNG pictures in my LaTeX document, and everything is working fine. However, I'm wondering if there's something I should do or know about pictures resolution for better print output. Currently, here's what I'm doing, and I need opinions/comments/suggestions about improving the results:

In my LaTeX code, I'm adding a picture like this:

Code: Select all

\begin{figure}[H]
  \centering
  \includegraphics[height=5cm]{Figures/picture.png}
  \caption[small caption]{Large caption}
  \label{a label}
\end{figure}

The output on screen is very good, but I didn't tested printing yet. The picture.png file is typically 1680 X 1050 pixels in size, at default resolution 72 dpi, and is of about 600KB in size on the hard disk (PNG file with colors, so no compression and no quality loss). The picture is shrinked by LaTex to 5 cm in height (see the code above).

What do you think? Is there something I should know to properly do this and get good results? The printing job would be done on a typical laser printer.