How much space will 100GB photo library take on iPhone if optimized for iCloud?
Our library in iPhoto is approximately 100GB. I understand that if I move to Photos and use iCloud that I will have to pay for the 200GB of storage. My question is related to how much space this entire library will take up on a 16GB iPhone. I understand that some space-optimized version of the photo is created and stored on the phone but is there a way to calculate how much space the optimized Photos library will take on the iPhone?
iPhone 6, iOS 8.4