Pentax ZX-M - Film Speed (ISO) Setting

Automatic film speed setting
This camera is designed to use DX-coded films with ISO
ratings from 25 to 5000. When DX-coded film is used, the
correct film speed is automatically set for the camera. If
you use a non-DX coded film, set the film speed manual¬
ly-
To set the ISO film speed manually:
1 To change the ISO to a larger number (higher film
speed), turn the exposure compensation dial to
[ A ] while holding down the exposure compensa¬
tion dial release button.
2 To change the ISO to a smaller number (lower film
speed), turn the exposure compensation dial to
[ T ] while holding down the exposure compensa¬
tion dial release button.
3 Depress the memory lock button until the desired
iSO is indicated on the LCD panel.
4 After the ISO is set, move the exposure compensa¬
tion dial to [ 0 ].
Note:
• The shutter cannot be released with the exposure com¬
pensation dial set at [ A ] or [ ▼ ].
• When the ISO film speed is set manually, [ ISO] appears
on the LCD panel.