Pentax DA 15mm F4 ED AL Limited Operating Guide

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How to use the Quick-Shift Focus System
1.
Using Autofocus
Set the focus mode switch to autofocus, then press the shutter release button halfway to autofocus.
With the 
 or 
 camera, you can also press the AF button to focus.
With the 
,
 or 
 camera set as explained in “Focusing with the OK Button” on page 15, you
can focus by pressing the OK button.
2.
Hold down the shutter release button halfway (or hold down the AF button or OK button), then
turn the focusing ring to finely adjust focus.
3.
Finally, press the shutter release button fully to take a picture.
The focusing ring on some lenses may rotate during autofocus.
Do not touch the focusing ring while autofocus is operating as it may cause a malfunction. For more
information see “CAUTION” on page 16.
e_kl577_17.fm  Page 18  Friday, June 27, 2008  3:37 PM