Holding down Ctrl+ and using the mousewheel increases the zoom amount per rotation. Holding down Alt+ and using the mousewheel decreases the zoom amount per rotation.
Ok, this has been annoying me lately... I often find the mouse wheel to zoom too far, so I have to use the mangify glass to get the right amount of zoom. Is there any way to make the mouse wheel zoom in less per spin? Tried digging through the configuration menu, couldn't find anything.