Artemis – Animal Photography Powerpoint Template
https://elements.envato.com/artemis-animal-photography-powerpoint-template-WZNQSWZ
Free 
Makena – Creative Powerpoint Template
https://elements.envato.com/makena-creative-powerpoint-template-J4N7XT4
Free 
Minska – B&W Photography Powerpoint Template
https://elements.envato.com/minska-b-w-photography-powerpoint-template-TSL7C88
Free 
Our travel memories slideshow
https://elements.envato.com/our-travel-memories-slideshow-F6XZD94
Free