Ricoh Lens A16 - Manual (Page 28)

[Auto Bracket]
[ISO-BKT] can be selected. With the value set for the ISO sensitivity setting
in the shooting menu as the standard, 3 images can be shot with differing
ISO settings; one at -1/3EV of the standard (set) value, one at the standard
(set) value, and one at +1/3EV of the standard (set) value.
Caution ----------------------------------------------------------------------------------
Since shooting is performed within the ISO sensitivity range that can be set,
the bracketing range may not be 1/3EV or an image may be shot with the
same settings, depending on the [ISO Setting].
[Interval Shooting]
The number of shots to be taken can be set. When this is set, the “remaining
number of shots” is displayed during shooting.
The shooting interval can be set to a minimum of 2 seconds, and the
number of shots to be taken can be set to a maximum of 99 shots.