How to adjust mouse scroll wheel zoom?

I notice that each player has a maxzoomdistance/minzoomdistance with a number value, but when I try to change these values it doesn't seem to work. I read on the roblox forums that I would have to set the camera type to scriptable (right now its fixed) but that screws up the way I've currently set things up. can I do this with a fixed camera, or is there another way to do it? I don't think I need to provide any code, there isn't much written yet.