According to the documentation at http://world.episerver.com/Documentation/Items/Developers-Guide/EPiServer-CMS/75/Configuration/Configuring-episerver/ the attribute zoomImageToFitInWindow on imageEditor element will zoom the image to fit in the image editor window.
However, setting the attribute to true doesn't seem to have any effect:
The image displayed is still way to large for the imageeditor-window.
Am I missing something here ?
I stumbled on this just now. Did you ever get an answer? Seems like it's not working...
Setting is obsolete (in epi 9 atleast)