Setting The Aperture [A (Auto) Lock Switching] - Pentax 26755 - SMC P FA 645 Zoom Lens Operating Manual

Setting the Aperture [A (Auto) Lock Switching]

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A
To set the aperture ring to A [Auto],
hold down the Aperture A-lock but-
ton and align the A index with the
white-line index. To set the aperture
ring to another setting, hold down the
Aperture A-lock button and turn the
aperture ring.
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* If your camera has a K mount with
no lens information contacts, set
the aperture ring to any aperture
except A.
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