Pentax K1000 - Open-Aperture or Stop-Down Metering

MULTIPLE EXPOSURE
For deliberate multiple exposures, make the first
exposure in the normal way. Then tighten the film
by turning the rewind knob e , and keep hold of
the -rewind knob. Depress the film rewind release
button €) and cock the rapid-wind lever. This
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cocks the shutter without advancing the film.
Finally, release the shutter to make the second
exposure.
Then make one blank exposure , before
taking the next picture , to avoid overlapping as
registration may
not be exact.