Magnifying Glass - Hover Zoom

needs a way to turn off the magnifying glass circle

Hi.. can you add a way to turn off the magnifying glass circle after you are done using it? once you turn it on you have to reload the page to turn it off. Can you add a thing on the button to turn it off or add a hot key to to it? I tried hitting esc key and it did nothing. if there is already aw awy to do this then let me know and add it to the how to use on the extention page. Thanks...