Where are iTunes backups stored on your computer The folder where your backup data is stored depends on your computer's operating system. Make sure the backup folder is included in your data-backup routine. iTunes places the backup files in these places: - Mac: ~/Library/Application Support/MobileSync/Backup/
The "~" represents your Home folder. If you don't see Library in your Home folder, hold Option and click the Go menu. - Windows XP: \Documents and Settings\(username)\Application Data\Apple Computer\MobileSync\Backup\
To quickly access the Application Data folder, click Start, and choose Run. Type %appdata% and click OK. - Windows Vista, Windows 7, and Windows 8: \Users\(username)\AppData\Roaming\Apple Computer\MobileSync\Backup\
To quickly access the AppData folder, click Start. In the search bar, type %appdata% and press Return.
Source:
iTunes: About iOS backups
Having said that, if you're expecting to see your backed up photos in the manner in which they appear on your device, that's not going to happen. You cannot pick and choose what to restore. It's an all or nothing thing at this time.