The Pro Lightbox is one of my personal favorite features within NextGEN Pro. With it you have the ability to have indivual image commenting and social sharing.
The Pro Lightbox is naturally Full Browser can can turn into a Full Screen lightbox with one click.
There is also a deep linking feature within the Pro Lightbox. This means that you can share a link through social media or within the browser while the Pro Lightbox is open. Then when visited by another person the Pro Lightbox will open in the same place.
Take a look at the Pro Lightbox.
F: Full frame
Space: Comment/Social Slider
Up: Hide/Show Information Bar
Down: Hide/Show Thumbnails
Left/Right: Navigate Images
Escape: Close the Lightbox
P: Play/Pause the Slideshow
Learn more in the Pro Lightbox documentation.