The answer is in another post - this is a copy (Paraphrased):
1. Connect the iPad (or iPhone) is to the computer
2. On you Mac, open the Image Capture application. You should see a list of devices in the left-hand pane
3. Select the iPad (or iPhone) from this list. Note that at the bottom of this pane is a prompt that says:
"Connecting this iPad opens:"
4. Change the "Connecting this IPad opens" to an option of your choice. I chose "No application" in my case.
Thanks to Don Bullock Jr - he deserves the points for this!