Pentax ES User Manual

Page of 24
Asahi Pentax ES Operating Manual Excerpts
Reproduced for Historical and Reference Purposes by Paul M. Provencher
http://whitemetal.com
    Not For Resale.
14
MECHANICAL SHUTTER
In addition to the electronic
shutter for the automatic exposure
control, the ES has a mechanical
shutter for speeds 1/60 X for
electronic flash synchronization,
1/125, 1/250,  1/500. 1/1000 sec.
plus B (Bulb).
To operate at any one of these
speeds, just turn the shutter dial
from "AUTOMATIC" to the desired
speed setting.  Now the electric
circuit and the TTL meter circuit
are off.