We just released Exchange 1. 5 with new product gallery options, including a new popup option and click or hover zoom.
Product Gallery Settings
After updating to Exchange 1. 5, visit Exchange > Settings. From here, you’ll see the new Product Gallery section.
To take advantage of the new gallery options, select Yes to Enable Popup and select Click and Yes to Enable Zoom.
Return to any of your product pages and click on the featured image.
Click on the featured image and a new popup will appear with a zoomed-in version of the image.
Here’s a screenshot of the new popup: