How do I make the camera make things go in and out of focus. From what I can tell, everything is always in focus and looks weird
Good question, blender it’s self does not have any immediate answer, although there are ways of faking depth of field with motion blur. Your best bet would be to install the latest version of Yafray and use its DOF settings. You can access them by selecting your camera and pressing f9. (make sure yafray has been installed first, and you have your render engine set to yafray in the scene panel f10)
ZBlur: https://blenderartists.org/forum/viewtopic.php?t=32750. It’s too bad, looks like the images don’t work.