Pentax 67II - Manual (Page 70)

ADVANCED OPERATION
68
Infrared Index Focus on a subject as usual and
memorize the focusing point on
the lens distance scale.
Turn the focusing ring to the left
until the point you memorized
aligns with the infrared index.
When infrared film and an
“R2” or “O2” filter are used,
the focal point is different
from that of ordinary film
exposed in visible light.
Focus on a subject in the
following manner.
● To set the proper exposure
level for infrared pictures,
refer to the instructions
accompanying the film.
The Aperture-Priority AE
Mode does not give a
correct exposure for
infrared film. Use the
Metered Manual Mode.
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