Ricoh Lens A16 - Manual (Page 34)

Key Custom Settings Tab Menu
[Reg. My Settings]
You can select from any of My Settings Box [1] to [6] and Card [1] to [6] for
the save location.
[Spot AF Area Setting] in the setup menu and the zoom position can also
be registered. When [Zoom Position] in [Edit My Settings] is selected,
settings can be edited.
[ADJ. Lever Settings]
You can set the [Aspect Ratio] function in [ADJ. Lever Setting 1] to [ADJ.
Lever Setting 4].
If you set the Aspect Ratio function, and press the ADJ. Lever button,
will appear, allowing you to set the aspect ratio.