The slideshow view is still in an early stage of development with only a basic set of features.

 1
 2spacebar             start and stop auto-advance mode which automatically switches
 3                     to the next images every five seconds by default.
 4
 5ESC                  leave slideshow mode and return to lighttable view.
 6
 7
 8+ or                 increase delay between each image.
 9up arrow
10
11- or                 decrease delay between each image.
12down arrow
13
14left-click or
15right arrow or       switch to the next image of the collection.
16right shift-key
17
18right-click or
19left arrow or        switch to the previous image of the collection.
20left shift-key

Hint: To take full advantage of your screen size, put Ansel into fullscreen mode by pressing F11 and hide the border-controls by pressing the B key.