There’s a little know feature of Photos called Slideshow. You can visit any album in Photos and play the Slideshow. There are different picture display options, you can assign your own music, and change Slideshow speed. You can even Airplay your slideshow to a device such as Apple TV.
To use the Slideshow feature, open Photos.
I recommend selecting the individual Photos when using Slideshow, but it will also work with any album.
Select a photo to begin. Tap the Share button and select Slideshow.
It will immediately begin to play. If you’d like to change the display of pictures, music accompaniment, or speed tap Options. Tap Done once you've made your choice.
If you'd like to Airplay the slideshow on your Apple TV, tap the Airplay icon in the upper right corner and select Apple TV.
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