If i sync my iPhone to my computer will it take my photos off my phone and put them on the computer?

I need to have my phone synced for the app zedge but i don't want my photos to be taken off my phone. There's this bar and on it it says photos, app, ect. And next to it is a little button that says sync. So IIm guessing it will take my photos. But i don't want that to happen but i need to sync my phone. Is there anyway i can do it without having my pictures going on to the computer?

It won't take them, it will copy them, so they will be in both places (computer and phone)