Itunes says i have way more photos than i really do?

Ok so on my iphone i had around 1500 pics, i just put a lot into iphoto & deleted them from my phone so now i only have 500ish on my phone, itunes says i have over 3000? Its really annoying because that makes it so there's almost no storage space on my phone. How do i fix this?

Try to sync the phone with itunes again. There should be a button in the bottom right hand corner.