Pentax SF1 - Infrared Index

INFRARED INDEX
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In Infrared photography when using infrared film and
an R2 or 02 filter, you need to adjust the focusing to
compensate for infrared rays, which are different from
the visible rays of normal photography.
As illustrated at left, memorize the subject's distance
indicated on the lens distance scale after focusing, then
turn the focusing ring to align that distance setting with
the red Infrared index before shooting. (See the film's
instructions for exposure settings.)
• Be sure to set the focus-mode switch at the MANUAL
position before turning the focusing ring manually.
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