Honeywell ESII User Manual page 9

4. Set shutter speed dial at
"AUTOMATIC".
7
5. Keep this lever down for open-aperture exposure reading. (Lens
aperture stays fully open, and stops down to pre-selected f/stop as
you depress shutter release.) Move it up for depth-of-field preview
or for stop-down exposure reading. (Lens aperture actually stops
down to pre-selected f/stop.)
6. TTL meter reading. Softly depress shutter button. Electric
circuit is now switched on. Meter needle starts moving and
indicates correct shutter speed.
7. Electronic memory device stores exposure reading information.
8. Depress shutter release button completely.
9. Memory device automatically releases electronic shutter.