OPERATION OF CAMERA CON
Setting the Aperture
The ring fitted at the base of the lens adjusts the size of the aperture (or opening) in the iris diaphragm. To pre- set the lens aperture, turn the aperture ring until the de- sired f/number setting on the scale is aligned with the index mark provided on the lens. The iris diaphragm can also be set to intermediate apertures between the click- stop settings for more precise exposures.
ROLS — continued
Film-Advance Lever
The film-advance lever simultaneously advances the film, cocks the shutter and operates the frame counter. It also switches on the exposure meter in the finder and unlocks the shutter-release button. To advance the film, stroke the lever with the right thumb in a single stroke totaling only 135°. A built-in locking device prevents the shutter from being released unless it is fully cocked and the film advanced a full frame. At the completion of film advance, release the lever and it will return to the 30° standoff position ready for shut- ter release.
Note: Do not apply pressure to the film-advance lever while making an exposure.
