Pentax 26755 - SMC P FA 645 Zoom Lens Operating Manual page 16

Interchangeable lens
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14
* If your camera has a K
you can still switch between auto-
focus and manual focus with the
lens focusing ring even when the
camera has been set to autofocus.
* If you have a camera (such as the
SF-series) having a K
both the camera and lens focus
mode switch to the same setting. If
the camera is set to autofocus [AF
single] and the lens is set to manu-
al focus, you cannot take a picture
until the camera's focus indicator
lights.
* If you use a camera which does not
have autofocus, focus manually.
mount,
AF2
mount, set
AF
* The telephoto lens' focusing ring
stops turning at slightly past the ∞
infinity symbol. This is because,
the point of focus changes depend-
ing on the temperature, and some-
times the focus is achieved beyond
the ∞ infinity symbol.
* Even when focusing at infinity,
always look through the viewfind-
er to make sure the subject is in
focus.
* When the lens is set for manual
focus, the focusing ring can contin-
ue to turn even past the minimum
focusing distance or infinity mark.

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