I noticed that there is a lack of free or open source "zoom" or magnifier effect modules out there, and the JqZoom provided by prestashop seems a bit basic for me, so I made my own and I'm putting it here.

The purpose of this plugin is to be able to add a magnifier or zoom effect to the product images in the product page (please see attached pics). There's also an extra field where you can put jQuery code to execute the elevateZoom plugin on other images, like product list images, etc. An example of this is provided inside the module.