Photos on Iphone taking up 8GB and I only have 200 photos?

A couple months ago I got my Iphone 4s fixed and the only thing that got deleted on it was my photos and it still said it was taking up 8 GB and now I wanna update to IOS7 but I don't have enough space and I only have 200 photos and it says its taking up 8GB how do I fix this?

Added (1). Yeah I know but even if I have ZERO photos its still says photos are taking up 8GB

Uh, move the pictures to another device like a computer…

Err so you're saying you had the phone fixed and photos got deleted except they didn't because they are taking up 8GB space?

So when you open image gallery they aren't there or what?

If they are not there then go into settings and usage and it'll tell you what is taking up space.

If photos are taking up space then simply move them onto a PC…