iPhone and iTunes photo numbers disagree
iPhone 4s OS 10.10.2
My iPhone says it has 12 photos on it. iTunes says 153 photos for 3.31 GB. I have repeatedly synced. Before doing so, I have checked that in the Photos:Sync page, 'Sync photos' is checked, 'Copy photos from pictures' says zero photos, and 'Selected folders' is checked, but none of the folders in the panel below is checked.
I have also re-installed system, but in the iTunes Summary page, there is still the same result.
3.31 GB is a lot of space, and I want to lose it.
Any ideas?
Thanks,
Graham