The Push External Viewer button causes Camera Control to look for an external viewer such as Adobe Bridge and “push” it to display the most recently downloaded image.
I know this works with:
- Adobe Bridge CS3
- Windows Explorer (most usefully in Filmstrip view)
For it to work the viewer must have in the window title the name of the folder being viewed. And it must accept either the “end” or the “left” key stroke to move to the next image. In practice that means you have to have the sort order correct so that the newest images appear to the right.
In Bridge that means setting the sort order to file name, which is faster, or “document created”. In Windows Explorer then file name order would be right.
You can see this explained for Bridge in the video at around the 5 minute mark.
If you have worked out how to do this with other viewers please feel free to contribute your findings as to the most appropriate settings in the comments. Thanks.