But now ... how do you get the picture back onto your camera to print it ?!?! Or ... you think you've copied/exported it back to the camera but it doesn't show up in the view-finder. What happened? Well, there are very strict rules that cameras (and printers and retail kiosks) use to store and retrieve valid pictures. If any of these rules aren't followed, the picture may not be processed.
If you don't want to take the time to figure things out ... iPhoto Copy Companion comes to the rescue! With your camera† (or memory card reader) connected to your Mac, simply drag-and-drop the desired picture(s) from iPhoto to iPhoto Copy Companion's "IMAGE NAME" box and click the "Copy to your media card" button. After you've copied the picture(s), simply connect your camera to the printer and print it out like you did before.
NOTE: Some cameras may not work this way. Only cameras that mount as a volume on the desktop will work with iPhoto Copy Companion. If your camera doesn't show up on the desktop, you will need to get a card reader to transfer pictures back to the camera using iPhoto Copy Companion.
Known supported camera manufacturers:
Confirmation needed for: