Zero Image Zero 135 Instruction Manual page 9

Trigger the Shutter
1. To expose, simply slide the shutter (A) to open. When the
exposure time is up, close it by sliding it back to cover the
pinhole.
open
2. If you use high speed film or a zone plate version camera, the
exposure time may be less than 1 second. This time you may
need to open the shutter (A) and cover the pinhole/zone plate
with hat and put it back to cover the pinhole as fast as you can.
3. If you have the optional cable release adaptor, you can open
the shutter manually by sliding it, or by attaching a cable
release to trigger the shutter as in the "B" mode on any
ordinary camera.
open
close
close
attach to cable release
7
open
close