Pentax MV-1 - Infra-Red Photography; Using the Infra-Red Mark; Focusing Adjustment for IR; Note on IR Film

INFRA-RED PHOTOGRAPHY
If you intend to take infra-red photographs,
remember to use the infra-red mark indicated
with an orange line on the depth-of-field scale.
First, bring your subject into sharp focus. Then
determine the subject-to-camera distance from
the distance scale on the lens. Then match your
subject-to-camera distance to the infra-red mark
by turning the focusing ring accordingly. For
instance, if your subject is in focus at infinity,
turn the focusing ring and move the infinity {<*>)
mark to the infra-red mark.
• NOTE: An infra-red focusing adjustment is not
required when working with infra-red color film.
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