Pentax IQZoom 160 IQZoom 160 Manual - Page 44

HARD-TO-AUTOFOCUS-SUBJECTS _C 3 While depressing the shutter release button halfway, re-aim the camera or recompose the picture, then release the shutter. Note: • You can release focus lock simply by lifting your finger from the shutter release button. The autofocus system is highly precise, but not perfect. Some subjects may not focus as you wish. In this case, use the focus-lock technique on another subject near the actual one and equidistant from the lens. Subjects which may fool the autofocus system include: a)Extremely low-contrast subjects such as a white wall or blue sky in the autofocus frame. b)Subjects which don't reflect much light in the autofocus frame. c)Subjects with horizontal lines or with finely complex or deatiled patterns in the autofocus frame. d)Subjects which are moving too fast. e) Multiple subjects in foreground of the autofocus frame. f) Subjects positioned against reflected light or strong backlight or with extremely bright background. 40