Feature request: Zoom to full width / height instead of %

[mmgj]

Love this component, but I wish I could set a flag that would make it zoom to the original image size instead of a percentage. I'm working on a site for a visual artist who does a lot of intricate details and wants to allow for people to explore his works closer, but understandably balks at having the closeups appear blurry and / or artifacted by being scaled beyond the original file dimensions.