Pentax K1000 - Setting ASA;ISO Film Speed

5. ROTATE DIAPHRAGM RING
The needle moves as you turn the diaphragm
ring. When
the needle on the right side of the
viewfinder image is at the center, you will
get correct exposure. If the needle does not
come to the center no matter how far you
turn
the diaphragm ring, change the shutter
speed. When
the needle is close to the (+)
mark, you will get an over-exposure; change
the shutter speed to a faster setting. If the
needle is closer to the (-) mark, you will
get an under-exposure; change the shutter
speed to a slower setting.
6. RELEASE SHUTTER
Cock the rapid-wind lever. Hold your camera
firmly and trip the shutter. Then cock
the
rapid-wind lever for the next picture.
(When taking a series
of pictures under the
same lighting conditions, it is not necessary
to repeat instruction 5.)
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