When the lever on the left side of the camera body . The shutter speeds then begin to go slower until they get to 1/30 second.It is therefore really the first programmed exposure mode camera!It is not a rangefinder - focus distance is set by estimation.Behind the focus ring is the shutter speed selection ring.
This shutter release does go down quite some distance compared to most shutter releases.The view through this viewfinder or window can hence be slightly different from the image that hits the film.The cameras are arranged alphabetically by manufacturer and then generally by date for each manufacturer. - Silette has a lengthy discussion of the various designs over the years.The aperture ring is behind that, closest to the camera. You set the shutter speed and aperture by estimation or a separate light meter.Film advance is with a lever, something fairly advanced for this level of camera at the time.