Can I customize what info shows along with an image when you click on it for a larger view?
I would like to show some specific information about the product each image is showing, and a link to its specific page. Is that possible?

Thanks.

Hello,

In K2 you can change the image's caption and credits.
You can override the default template - getk2.org/documentation/tutorials/174-templating-with-k2-and-the-concepts-of-sub-templates - and instead of the link towards the modal manually render an extrafield which holds a custom link value.
github.com/kricore/Advanced-templating-with-K2/blob/master/_inc/cheatsheet.php#L104-L109