Many people love taking photos with iPhone, and for kinds of reasons you would lost your love photos. But we can still recover them as long as you've made a backup in iTunes before, and I think it's easier to use an iPhone data recovery app to help.
This iPhone Backup Extractor works great, it's high quality and easy to use.
Know more: How to recover iPhone photos on computer
Remember don't connect your iPhone to computer, or the iTunes backup file will be updated.
How to extract iPhone photos from iTunes backup