gm_alex

This release is a beta release, so error could occur. If you notice an issue please create a issue here: https://github.com/GM-Alex/user-access-manager-nextgen-gallery-extension/issues 
This plugin allows you to use the <a href="https://wordpress.org/extend/plugins/user-access-manager/" rel="ugc">User Access Manager</a>-Plugin to control the access for the <a href="https://wordpress.org/extend/plugins/nextgen-gallery/" rel="ugc">NextGEN Galley</a>-Plugin. You can lock Albums, Galleries and Images.
Feature list
<ul>
<li>Hide albums (if no access)</li>
<li>User-defined album content (if no access)</li>
<li>Hide galleries (if no access)</li>
<li>User-defined gallery title (if no access)</li>
<li>User-defined gallery content (if no access)</li>
<li>Hide images (if no access)</li>
</ul>

User Access Manager – NextGEN Gallery Extension

With this plugin you can use the "User Access Manager" to control the access for the "NextGen Gallery".

Hiroaki Miyashita

Importance: 
From 0.7.1, the default view changed to Colorbox due to the license regulation by the plugin directory. If you would prefer the prior Lightbox to Colorbox, you need to get the script from the setting page.
The Lightbox Gallery plugin changes the view of galleries to the lightbox.
<ul>
<li>Lightbox display of Gallery</li>
<li>Tooltip view of caption of images </li>
<li>Displays the associated metadata with images</li>
<li>Divides Gallery into several pages</li>
<li>Extends the default Gallery options</li>
<li>Additional settings are set in the option page</li>
<li>Switch to the Highslide JS display</li>
</ul>
You can also make regular images appear in a lightbox. See Faq.
Localization
<ul>
<li>Brazilian Portuguese (pt_BR) – <a href="http://www.emmanuelcarvalho.com.br/" rel="nofollow ugc">Emmanuel Carvalho</a></li>
<li>Belorussian (by_BY) – <a href="http://antsar.info/" rel="nofollow ugc">ilyuha</a></li>
<li>Czech (cs_CZ) – <a href="http://blog.vlastenci.cz/" rel="nofollow ugc">Petufo</a></li>
<li>Spanish (es_ES) – <a href="http://www.bluebrain.es/" rel="nofollow ugc">Daniel Tarrero</a></li>
<li>Danish (da_DK) – <a href="http://www.clmedia.dk" rel="nofollow ugc">Jacob Voldby</a></li>
<li>German (de_DE) – Michael Wruck and Tacitus Media</li>
<li>Farsi (fa_IR) – <a href="http://webdata.in/" rel="nofollow ugc">Ehsan Razavi</a></li>
<li>French (fr_FR) – <a href="http://www.benletibetain.net/" rel="nofollow ugc">BenLeTibetain</a></li>
<li>Hindi (hi_IN) – <a href="http://outshinesolutions.com/web-hosting/web-hosting-india.html" rel="nofollow ugc">Outshine Solutions</a></li>
<li>Croatian (hr) – <a href="http://aciddot.com/" rel="nofollow ugc">Tomislav Konestabo</a></li>
<li>Hungarian (hu_HU) – <a href="http://www.google.com/profiles/zsolt.vereb" rel="nofollow ugc">Zsolt Vereb</a> and <a href="http://feriman.com/" rel="nofollow ugc">Feriman</a></li>
<li>Italian (it_IT) – <a href="http://gidibao.net/" rel="nofollow ugc">Gianni Diurno</a></li>
<li>Japanese (ja) – <a href="https://wpgogo.com/" rel="nofollow ugc">Hiroaki Miyashita</a></li>
<li>Dutch (nl_NL) – <a href="http://www.peterarends.net/" rel="nofollow ugc">Peter Arends</a></li>
<li>Polish (pl_PL) – Otmar</li>
<li>Romanian (ro_RO) – <a href="http://www.jibo.ro/" rel="nofollow ugc">Anunturi Jibo</a></li>
<li>Russian (ru_RU) – <a href="http://www.fatcow.com/" rel="nofollow ugc">Fat Cow</a></li>
<li>Slovak (sk_SK) – <a href="http://www.brozman.sk/blog/" rel="nofollow ugc">Viliam Brozman</a></li>
<li>Swedish (sv_SE) – <a href="http://nemrod.se/" rel="nofollow ugc">Anders Martensson</a></li>
<li>Turkish (tr_TR) – <a href="http://www.dmry.net/" rel="nofollow ugc">Hakan Demiray</a></li>
<li>Ukrainian (uk_UA) – <a href="http://wpp.pp.ua/" rel="nofollow ugc">Vitalij Lew</a></li>
<li>Simplified Chinese (zh_CN) – <a href="http://www.inanu.net/" rel="nofollow ugc">leonanu</a></li>
</ul>
If you have translated into your language, please let me know.
Are you interested in other plugins? See the following site <a href="https://www.cmswp.jp/" rel="nofollow ugc">CMS x WP</a>.
<h3>How to use</h3>
How to use this plugin is basically the same as the way to add [gallery] which has been adopted 
by over WordPress 2.5. Lightbox Gallery plugin automatically converted the default view of gallery 
into the lightbox view. Photo captions are displayed as tooltips. Photo descriptions are displayed 
when the lightbox pops up.
<h3>Advanced settings</h3>
There are three additional options to extend the shorttag [gallery].
<ul>
<li>lightboxsize</li>
</ul>
The image size when the lightbox pops up. The default is medium, but you can change to full.
[gallery lightboxsize=”full”]
<ul>
<li>meta</li>
</ul>
Defines whether the exif information is displayed. The default is false. 
If you want to show the photo info, set true. The exif shown on the lightbox includes camera body, 
aperture, focal length, shutter speed, and created timestamp.
[gallery meta=”true”]
<ul>
<li>class</li>
</ul>
Adds a class attribute of the gallery. The default is <code>gallery1</code>.
[gallery class=”gallery2″]
<ul>
<li>nofollow</li>
</ul>
Adds the attribute, rel=”nofollow”. The default is false.
[gallery nofollow=”true”]
<ul>
<li>from, num</li>
</ul>
Defines from which and how many photos are displayed. 
If the number of photos is over that of <code>num</code>, the navigation will be shown. 
You can use the navigation option almost same as the <code>wp_link_pages</code> function.
[gallery from=”5″ num=”10″]
<ul>
<li>pagenavi</li>
</ul>
If you would like not to show the navigation, set <code>0</code>. The default is <code>1</code>.
[gallery num=”10″ pagenavi=”0″]
<ul>
<li>colorbox_settings</li>
</ul>
You can set the additional settings for Colorbox. See <a href="http://www.jacklmoore.com/colorbox/" rel="nofollow ugc">Colorbox official site</a>.
[gallery colorbox_settings=”transition:’fade’, slideshow:true”]
<h3>Known Issues / Bugs</h3>
<h3>Uninstall</h3>
<ol>
<li>Deactivate the plugin</li>
<li>That’s it! 🙂</li>
</ol>

Lightbox Gallery

Really, nothing works as expected, looks broken and counter-intuitive. 

It is beyond any definition of bad

The Lightbox Gallery plugin changes the view of galleries to the lightbox.

User Access Manager – NextGEN Gallery Extension vs Lightbox Gallery