It should be noted that this solution only works on Mac OS X 10.6 Snow Leopard. If you are running 10.5 or earlier, you’ll have to use one of the solutions noted above; we recommend the free Cameras preference pane as a quick fix.
You’ll see the image above is of iPhoto’s preferences. You may think the option of disabling iPhone auto-open is in there, but it’s not. To stop the iPhone from opening iPhoto you actually need to launch the Image Capture application.
Step 1: Launch Image Capture (Applications>Image Capture). If your iPhone isn’t plugged in already, plug it in to the USB port on your Mac. It should then show up in the devices source list.
Step 2: Make sure you have the iPhone selected in the source list. When you do, you should see any photos you have on the iPhone appear in the right-hand column of the Image Capture application.
Step 3: At the bottom of the source list, you’ll see your iPhone’s name then, below that, you’ll see the words “Connecting this iPhone opens:” and a drop-down menu. Select “No application.” Now close the Image Capture app and you’re done. No more iPhone opening up iPhoto, but your other cameras will still auto-launch iPhoto when they are connected!
