Nikon CoolPix P7100 Reference Manual page 74

A, B, C, D Modes (Setting the Exposure for Shooting)
Option
Zoom memory
C
Features That Cannot Be Used Simultaneously
This feature may not be used in combination with certain features (A80).
56
When the zoom control is operated while pressing the
w1 button, the camera changes in steps to the focal
length (equivalent to 35mm [135] format of angle of view)
of the zoom lens that is set in advance.
• The default setting is on w for all the check boxes.
Description
A
E57