Pentax Spotmatic II manual Automatic Diaphragm

Automatic Diaphragm*

OUT OF FOCUS	When the preview lever is in the "AUTO"
	(automatic) position, and the exposure meter is
	turned to "OFF", the fully automatic diaphragm
	is at its largest aperture at all times, except for
	the instant of exposure, no matter what
	aperture is set on the diaphragm ring. When
	you release the shutter, the diaphragm
	automatically stops down to the predetermined
	aperture and the shutter curtains start travelling
	instantly. When the exposure is completed, the
	diaphragm reopens to maximum aperture
	completely automatically and you are ready to
	compose, focus and shoot your next pictures. If
	you wish to visually check exact depth-of-field
	before making the exposure, move the preview
	lever to the "MAN" (manual) position. This stops
	the diaphragm to the aperture selected and
	shows you exactly how much depth-of-field will
	appear in your picture. The preview lever may
	be moved back to "AUTO" (automatic) position
	before or after making your exposure, or, if you
	are making pictures in bright sunlight, it may be
	left in manual position, which permits a constant
	check of depth of field.
	* When the exposure meter switch is turn to
	the "on" position, the lens diaphragm changes
	from the automatic to manual position even
	though the preview lever is in the "AUTO"
	(automatic) position. When the shutter is
	released, the lens diaphragm will automatically
	return to its automatic position if the lever is set
	on "AUTO"
IN FOCUS

Reproduced for Historical & Reference purposes by Paul M. Provencher -	12
http://whitemetal.com