When deploying iOS devices on an OS X host, it's recommended to disable Photos from automatically launching. To do this simple run the following from the Terminal:
defaults -currentHost write com.apple.ImageCapture disableHotPlug -bool YES
To Reverse this change, simply run:
defaults -currentHost write com.apple.ImageCapture disableHotPlug -bool NO
Any questions or queries, please contact support@datajar.co.uk