I'm trying to find the correct way to backup my camera roll in iCloud but am not sure if I have it setup correct. When going to settings,iCloud ,the list opens to the right. Under photos it shows as "On". When clicking ON photos opens with three choices with the top two turned OFF and the bottom iCloud photo sharing is ON. Do I need to have any of those in the ON or can they all be left in the OFF ? All that matters to me is that my camera roll is being backed up. I hope my question isn't to confusing.