Keyboard Shortcuts

Key	Does
Ctrl / ⌘ + Z	Undo the last change to the photo's settings, keyframes or masks
Ctrl / ⌘ + Y, Shift + Ctrl / ⌘ + Z	Redo
Space	Play / pause the animation (also right after using a slider or button)
+ / −	Zoom in / out (in the thumbnail grid: bigger / smaller thumbnails)
0	Fit to window (Lenslets: the whole sensor)
1	Actual pixels (1:1)
F	Full sensor on / off
D	Show the depth map on / off
Enter	Crop: apply the frame
Esc	Crop: cancel; white balance picker: cancel; menus: close
Double-click a slider	Reset it
Ctrl / ⌘ + O	Import a Lytro file (desktop app)

In the keyframe editor:

Key	Does
Delete / Backspace	Delete the selected keyframes
Ctrl / ⌘ + A	Select every keyframe
Shift-click a keyframe	Add it to the selection, or take it out
Ctrl / ⌘ + mouse wheel	Zoom the timeline
Shift + mouse wheel	Scroll along the timeline

Menu bar

The desktop app has a menu bar (on macOS, at the top of the screen):

File: Import Lytro File…, Import Lytro Library…, Quit (on macOS, Quit is in the ILLUMinator menu)
Edit: Undo and Redo step through the photo's edits (in a text field, its typing); Cut, Copy, Paste and Select All for text fields
View: Actual Size, Zoom In and Zoom Out (the size of the whole window's contents), and Toggle Full Screen
Window: Minimize, Zoom and Close
Help: About shows the About window; Wiki opens this wiki in your browser