Shooting With Infrared Film - Canon AE-1 PROGRAM Instructions Manual

23. Shooting with Infrared Film
When you load the AE-1 PROGRAM with black-
and-white infrared film, it is necessary to make a
slight adjustment in focus. A red infrared index is
engraved on most Canon lenses for this purpose.
First focus as usual through the viewfinder. Then
read the distance opposite the distance index on
the lens and turn the focusing ring to align that
distance with the infrared index. It will also be
necessary to use a deep red filter, as specified by
the film manufacturer, over the lens.
For further details, follow the instructions of the
film manufacturer.
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