Hello again.
I did some searching and it looks like it was possible in G2 to allow guests to view thumbnails, but must register to see a larger image. I currently have full size image disabled for all, but I am looking for a way in G3 for guests to view thumbnails, and require registration when they want to view what would essentially be photo.php
With the default G3 installation, permissions for guests will not allow viewing of thumbnails, but I need something to entice user registration.
Thank you in advance.