Infra-Red Photography; How To Make Deliberate Double Exposure - Honeywell PENTAX SPOTMATIC IIa Operating Manual

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Self-timer
Depending upon how far down you turn the
self-timer cocking lever ©, it will release the
shutter in 5-13 seconds. When operating the
self timer, always depress the self-timer re¬
lease button © to release the shutter.
Do
not depress the shutter button ... it will im¬
mediately release the shutter without delayed
action. The self-timer cocking lever should
be turned down at least 90'' or the release
button will not operate.
Infra-red photography
If you intend to take infra-red photographs,
remember to use the small "R" index mark¬
ed on the depth of-field guide. Some of the
Takumar lenses, however, like the above pic¬
ture of Super-Takumar 50mm f/1.4, do not
have the "R" mark. The index is just a short
orange line.
First, focus your lens on your subject.
Determine the lens to subject
distance from the distance scale.
Then match your lens to subject
distance to the "R" mark by turning the distance scale accordingly.
or instance, if your subject is in focus at infinity, turn the distance
ring and move the infinity (oo) mark to the "R" index.
The "R" index marking on the Takumar lenses is based on the lens
setting at infinity.
How to make deliberate double exposure
For deliberate double exposures, make the first exposure in the normal way
1 hen tighten the film by turning the rewind knob ©, and keep hold of the
rewind knob.
Depress the film rewind release button (5) and cock the rapid
wind lever.
This tensions 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.
7

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