Consider the following image. It has a natural content-width of 128 and a natural content-height of 118.

Here is how it would be rendered for various graphic attribute settings (assuming that the background color of the area where it is rendered is blue):

<imagedata fileref="stamp.png">

OR

In other words, the natural size is the size of the image. On some media, the default width might be the width of the current column, but most media default the depth to the depth of the image. For the rest of these examples, the width and depth are specified explicitly in order to remove the ambiguity of the processors "natural" reproduction area.

<imagedata fileref="stamp.png" width="256" height="512" content-depth="256" align="left" valign="top">

OR

<imagedata fileref="stamp.png" width="256" height="512" content-width="256" valign="center">

<imagedata fileref="stamp.png" width="256" height="512" content-width="256" content-depth="384" valign="bottom">

OR

Anamorphic scaling is not necessarily going to be supported by every processor.

<imagedata fileref="stamp.png" width="256" height="512" content-width="256" scale="125" align="right" valign="top">

OR

<imagedata fileref="stamp.png" width="256" height="512" align="right" valign="bottom">

<imagedata fileref="stamp.png" width="256" height="512" scalefit="1" align="left" valign="top">