You should open a ticket for that navigation idea. There is a breadcrumb on top of the page as well. And if you don't have too many images you could use your browser tabs to keep the main album page open.

Done here: https://github.com/zenphoto/zenphoto/issues/523

The breadcrumb is useful when one wants to go back up the same branch, but doesn't allow to go anywhere else in one click.

Quote:The GD image library is not too competent, so if you have Imagick available it might do a better job
how can I see if Imagick is enabled on my server and how can I enabled it rather than GD image library ?

If that is the case setup will tell about and also you find a checkbox on the options. Besides that via phpinfo() you get everything that is installed. We have a button on the admin overview page for that, too.