Pentax Lens - ZOOM LENS FEATURES; Zoom Set Button and Auto Zoom Switch Explained

16
*
An FA Zoom lens without
the power supply con-
tacts on its mount does
not have the zoom set
button and auto zoom
switch.
ZOOM LENS
28-105
5
2
ft
m
A
22
16
11
8
5
.6
PA
AS
P
O
W
E
R
ZOOM
105
5
0
28
Focusing ring
Zoom ring
Aperture-A lock button
Aperture index
(for longer focal
length)
Aperture index
(for shorter focal
length)
Auto zoom switch
Zoom set button