Accessing all Backups
Due to some glitches in my iPhoto Library I wanted to attempt to retrieve some old photos I had taken on my iPhone 6 a month back, so I thought instead of buying a software specific to retrieving lost photos I would just retrieve the photos through an old backup to save me some time and money. My phone is on automatic backup so logically speaking it should have a backup from a month ago, but when I go to look at my backup files I have my most recent one (today) and then a backup from a year ago. I tried accessing them through ~Library/Application Support/MobileSync/Backup, but I couldn't find anything there that wasn't already showing up in iTunes.
So, my question here is if there is anyway to the access the data from these previous backups that are not saved on iTunes or hidden within the ~Library/Application Support/MobileSync/Backup?
And if there isn't a way to access this data I guess I just want to know what happens when my iPhone backups every time I plug it into my Mac?
MacBook Pro