Hi Chris,
The easiest option would be to place each photo on an independent worksheet, then use a linked worksheet marker placed on the floorplan to link back to it.
Masterscript do a nice little marker for this -
http://www.masterscript.nl/labels-and-markers/45-camera-marker.html
This should also work in any multipage pdfs produced if the photos are included in the package. These articles by Jared/Shoegnome explain it better -
http://blog.graphisoftus.com/?s=hyperlinks+and+ArchiCAD+Part