Users primarily noted that iTunes does not back up those photos which are already synced by your end to another source, like iCloud.iTunes does not back up photos of the iPhone if downloaded from either the system PC or another source.It can backup only those photos that get captured directly from the camera of the iPhone device.iTunes can back up almost all data from the iPhone device, including photos.Now, the simple answer to the question lies in the following points: Although iTunes is an excellent resource to perform the backup action, still a pre-confirmation will always be beneficial to the issue. In this stride, the question might arise that does iTunes backup photos or not. You cannot make any decision in an impulse as that will result in more worry, than solving the issue. It is quite an important question to ask if you are an iPhone user and have a bulk of photos in your device since taking care of all those valuable moments becomes a priority of yours. Part 5: Alternative to iTunes backup photos – MobileTrans – Backup

Extract pictures from itunes backup