19) infrared index, Focus on a subject as usual, The infrared index – Pentax ZX-5N User Manual

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(19) INFRARED INDEX

When infrared film and an "R2" or '02” filter are used,

the focal point is different from that of ordinary film ex

posed in visible light. The autofocus system cannot
compensate for this difference automatically.

How to focus
1. Focus on a subject as usual.

2. Set the focus mode switch to [ MF ] and turn the

focusing ring to the left by the distance indicated
on the infrared index.

• As shown in the illustration, if 28 is read from the

zoom scale, adjust the distance scale to 28 on the

infrared index (red line).

•

In the autofocus mode, the focus cannot compensate

for infrared photography.

•

To set the proper exposure level for infrared pictures,

refer to the instructions accompanying the film. The

Programmed AE Mode does not give a correct expo

sure. Use the Metered Manual Mode.

-I