Magnifier Help Information When you open the Zoom Box from window "A" and place it into window "B", you get a "lens" expansion of the region in the Zoom Box in window "A". The "lens" expansion is a pixel enlargement. It gives you a rough approximation of what your new project will look like. The lens magnifier effect can slow down Zoom Box dragging and resizing. If you don't like the slow down, you can turn off the magnifier using the Magnifier Off menu subitem.