Pentax A30E - Manual (Page 34)

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ick Star
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Focus lock
When you have difficulty in auto focusing on a subject, try the
procedures below.
1
Find alternate subject that is in the same distance from
the camera as the desired subject.
2
Focus on the alternate subject.
Locate it in the focus frame on the LCD monitor.
3
Press the shutter release button halfway.
The focus frame turns green when the camera is in focus.
4
While holding the shutter release button halfway, move
the camera to obtain the desired composition.
The focus is locked at the point you set in step 3 even if you
recompose. (Focus lock)
5
Press the shutter release button fully.
You may have difficulty in auto focusing on such subjects as:
• Subject contrast is very week. (blue sky, solid white wall, etc.)
• Dark places, black object, or subject that does not reflect light.
• Subject with strong reflected light, or strong backlight.
• Object with a fine pattern
• Rapidly moving objects
• When a distant object and a close object are both in the focus frame.