With the Full width background gallery wordpress plugin now you will be able to create any number of galleries and assign them to post or pages.
Here are some of the salient features of the Full width Background Gallery WordPress Plugin:
Read more instructions about how to use here http://www.wpfruits.com/full-width-background-gallery-wordpress-plugin/
This is a Plugin from WPFRUITS
You can also try our Full Width Background Slider WordPress theme Analytical full Width Slider WordPress theme