grizzlyhawk2000:
This is how I am using it within my project.
<a href="<?php echo get_field('image', $advert->ID)['sizes']['large']; ?>" rel="lightbox[<?php echo $advert->ID; ?>]" ><img src="<?php echo get_field('image', $advert->ID)['sizes']['thumbnail']; ?>" /></a>
Hard to say why it doesn’t work for you without seeing some code.
Hi
I needed this functionality as well. To get around WP-Lightbox-2 placing images in a gallery, I used something like.
rel="lightbox[<?php echo $uniqueIdentifier; ?>]"
This essentially will create a 1 image lightbox gallery.