Expected behavior View chosen images in Lightbox that are not in a specified gallery

Actual behavior Not sure if it's possible

Resources (screenshots, code snippets etc.) I'd like to place preview images throughout the page (not in a set gallery section) and have them be viewable at full size in Lightbox.

Whether or not the individual image(s) appear in the same lightbox grouping is not important. But, it certainly would be nice to be able to cycle thru all of them at once.