The Lightbox effect is a nice touch to the product images within the product pages when they are clicked on. To install Product Lightbox Image head over to the Features section of your EKM account.
The lightbox feature creates a professional looking effect for full image presentation, as opposed to a simple popup window containing the image. This is an optional feature, so if you do not wish to enable it, then you do not have to.
Below is an image illustrating the usage of the lightbox feature. The image on the left is without lightbox enabled, simply showing the popup, while the image on the right shows the highlighted image using lightbox: