Pentax A40 Operation Manual - Page 37
Press the shutter release button halfway., the camera to obtain the desired composition.
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Quick Start Focus lock When you have difficulty in auto focusing on a subject, try the procedures below. You may have difficulty in auto focusing on such subjects as: • Subject contrast is very low. (a blue sky, solid white walls, etc.) • Dark places, black objects, or subjects that cannot reflect light. • Areas of strongly reflected light or backlit subjects 2 • Fine patterns • Rapidly moving objects • When a distant object and a close object are both in the focus frame. 1 Find an alternate subject placed at 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. 35