TN3 Gallery is very interesting and has good functions. I see small, but the essential problem.
If the image will be vertical, then in the large enlargement one can see only his fragment.
Very necessary is in your TN3 Gallery the scalability of the large image ( mouse wheel - switch on/off zoom and mouse scroll of large images) like in < http://activeden.net/item/elegant-pho... >( click in the menu "OBJECTS")
Then, TN3 Gallery had that all necessary functions to the display of images ( vertical and horizontal).
This would be the best.